An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for India’s South West Monsoon 2021 shows that there were 2079 instances when a district rainfall of a day was above 50 mm. Such high rainfall instances included 1712 instances when rainfall was 50-100 mm, 288 instances when it was 100-150 mm, 53 times it was 150-200 mm and 26 times above 200 mm. Out of 694 districts of India, 527 districts or, about 76% of the districts experienced such high rainfall days during SW monsoon 2021.
The month wise break of the high rainfall district days during the monsoon months of June 2021[i], July 2021[ii], Aug 2021[iii] and Sept 2021[iv] are in respective articles in detail. Here we will look at the month wise figures of such instances in each of the states for SW Monsoon 2021. We will do it by looking at five regions of India: North, East, North East, West and South India. Detailed articles on June[v], June-July[vi], June-Aug 2021[vii] and Monsoon 2021[viii] provide more information about district wise, state wise rainfall in respective months.
IndiaSpend wrote on Oct 11, 2021[ix]: “IMD data show that the number of heavy rain events in 2021 was the second lowest in the last five years, but further illustrate the unusual pattern of low August rainfall and very high September rainfall this year. Heavy rain events encompass very heavy (115.6 to 204.4 mm) and extremely heavy rainfall events (more than 204.4 mm of rain). August 2021 recorded the least extremely heavy rainfall events in the last five years and September 2021 the most. September 2021 also saw the second highest number of very heavy rainfall events since 2017.”
NORTH EAST INDIA: Arunachal Pradesh The high number of district days that experienced high rainfall events in Arunachal Pradesh in each of the four months of SW Monsoon 2021 is given in table below.
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 8 (16) | 17 | 3 | 1 | 0 | 21 |
| July 2021 | 7 | 8 | 0 | 0 | 0 | 8 |
| Aug 2021 | 7 | 34 | 4 | 1 | 0 | 39 |
| Sept 2021 | 4 | 5 | 0 | 0 | 0 | 5 |
| SW Monsoon 2021 | 11 (16) | 64 | 7 | 2 | 0 | 73 |
In Arunachal Pradesh, the highest number of such events happened in East Siang (19), Lower Dibang Valley (19) and Papumpare (13) districts. Thus three districts alone had 51 out of 73 such events in the state. Papumpare and East Kameng districts had such events in each of the four monsoon months.
Assam
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 16 (27) | 35 | 10 | 1 | 0 | 46 |
| July 2021 | 15 | 28 | 3 | 0 | 0 | 31 |
| Aug 2021 | 13 | 26 | 0 | 0 | 0 | 26 |
| Sept 2021 | 13 | 16 | 1 | 1 | 0 | 18 |
| SW Monsoon 2021 | 22 (27) | 105 | 14 | 2 | 0 | 121 |
The highest number of such instances happened in Barpeta (12), Chirang (16) and Kokrajhar (14), the three districts having about 40% of instances of Assam. Chirang and Kokrajhar had such instances in all four monsoon months.
Meghalaya
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 6 (7) | 17 | 9 | 2 | 3 | 31 |
| July 2021 | 4 | 11 | 3 | 0 | 0 | 14 |
| Aug 2021 | 6 | 24 | 12 | 5 | 0 | 41 |
| Sept 2021 | 1 | 1 | 0 | 0 | 0 | 1 |
| SW Monsoon 2021 | 7 (7) | 53 | 24 | 7 | 3 | 87 |
Except Ri Bhoi (2) and West Garo Hills (1), all the remaining districts had high no of such instances. East Garo Hills is the only district that had such instances in all four monsoon months. The highest one day rainfall happened in East Khasi Hills district at 292.4 mm on June 29, 2021. In fact, Meghalaya is the only state in entire NE India that had some (3) instances when a day’s rainfall exceeded 200 mm. East Khasi Hills also had the highest no of such instances, at 27, that is more than 50% of such instances of Meghalaya.
Nagaland
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 2 (11) | 2 | 0 | 0 | 0 | 2 |
| July 2021 | 4 | 5 | 0 | 0 | 0 | 5 |
| Aug 2021 | 3 | 3 | 1 | 0 | 0 | 4 |
| Sept 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| SW Monsoon 2021 | 8 (11) | 12 | 1 | 0 | 0 | 13 |
Manipur
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 4 (9) | 12 | 0 | 0 | 0 | 12 |
| July 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| Aug 2021 | 4 | 7 | 2 | 0 | 0 | 9 |
| Sept 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| SW Monsoon 2021 | 6 (9) | 21 | 2 | 0 | 0 | 23 |
Tamenglong (11) had the highest no of such instances, followed by Imphal West (7). Imphal West is the only district that had rainfall over 100 mm in Manipur during SW Monsoon 2021, this happened on two instances, both in August 2021.
Mizoram
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 2 (8) | 2 | 0 | 0 | 0 | 2 |
| July 2021 | 6 | 9 | 0 | 0 | 0 | 9 |
| Aug 2021 | 5 | 8 | 1 | 0 | 0 | 9 |
| Sept 2021 | 6 | 7 | 1 | 0 | 0 | 8 |
| SW Monsoon 2021 | 7 (8) | 26 | 2 | 0 | 0 | 28 |
Saiha (6), Aizwal (5), Kolasib (6) and Mamit (5) had 22 of the 28 instances of Mizoram. Only Aizwal (on Aug 3) and Kolasib (Sept 1) had in a day over 100 mm.
Tripura
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 1 (4) | 1 | 0 | 0 | 0 | 1 |
| July 2021 | 4 | 3 | 2 | 0 | 0 | 5 |
| Aug 2021 | 4 | 4 | 0 | 0 | 0 | 4 |
| Sept 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| SW Monsoon 2021 | 4 (4) | 10 | 2 | 0 | 0 | 12 |
South Tripura had the highest no of district days (5) when daily rainfall exceeded 50 mm. Both South and West Tripura districts had rainfall over 100 mm on July 1, 2021.
Sikkim
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 4 (4) | 5 | 0 | 0 | 0 | 5 |
| July 2021 | 3 | 4 | 0 | 0 | 0 | 4 |
| Aug 2021 | 2 | 3 | 0 | 0 | 0 | 3 |
| Sept 2021 | 1 | 1 | 0 | 0 | 0 | 1 |
| SW Monsoon 2021 | 4 (4) | 13 | 0 | 0 | 0 | 13 |
It seems strange that none of the districts of Sikkim crossed 100 mm rainfall on any day during SW Monsoon 2021. South Sikkim district had the highest number of high rainfall events (5). Interestingly, South Sikkim had such days in each of the four monsoon months. North Sikkim district had the least no of such incidents, at 2, both in June 2021.
The figures for the SW Monsoon 2021 for North East India are given in the table blow.
| State | Districts that had over 50 mm rainfall at least on one day in Monsoon 2021 (Total no of districts) | No of district days when rainfall 50-100 mm | No of district days when Rainfall 100-150 mm | No of district days when Rainfall 150-200 | No of district days when Rainfall over 200 mm | Total no of district days when rainfall over 50 mm |
| Arunachal Pradesh | 11 (16) | 64 | 7 | 2 | 0 | 73 |
| Assam | 22 (27) | 105 | 14 | 2 | 0 | 121 |
| Meghalaya | 7 (7) | 53 | 24 | 7 | 3 | 87 |
| Nagaland | 8 (11) | 12 | 1 | 0 | 0 | 13 |
| Manipur | 6 (9) | 21 | 2 | 0 | 0 | 23 |
| Mizoram | 7 (8) | 26 | 2 | 0 | 0 | 28 |
| Tripura | 4 (4) | 10 | 2 | 0 | 0 | 12 |
| Sikkim | 4 (4) | 13 | 0 | 0 | 0 | 13 |
| North East India | 69 (86) | 304 | 52 | 11 | 3 | 370 |
So more than 80% of the districts in North East India had high rainfall day during SW Monsoon 2021, even in an year when most states in NE India had below normal rainfall. Seven of the eight NE states (Sikkim is the exception where rainfall was 12% above normal) had below normal rainfall with deficit ranging from 15% (Tripura) to 60% (Manipur).
EAST INDIA: Sub Himalayan West Bengal
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 4 (6) | 4 | 4 | 0 | 0 | 8 |
| July 2021 | 3 | 8 | 2 | 0 | 0 | 10 |
| Aug 2021 | 5 | 19 | 2 | 0 | 0 | 21 |
| Sept 2021 | 3 | 1 | 2 | 0 | 0 | 3 |
| SW Monsoon 2021 | 5 (6) | 32 | 10 | 0 | 0 | 42 |
Malda, the only district of SHWB that did not have high rainfall day in Monsoon 2021 had the highest rainfall deficit at 38% among the six districts of SHWB and 4 districts of Sikkim, the rainfall of SBWB and Sikkim have parallel trends. Kochbihar (14), Jalpaiguri (13) and Darjeeling (11) had the highest number of high rainfall days in Monsoon 2021, these three districts also had such days in each of the four monsoon months.
Gangetic West Bengal
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 10 (13) | 14 | 4 | 0 | 0 | 18 |
| July 2021 | 12 | 17 | 6 | 2 | 1 | 26 |
| Aug 2021 | 7 | 8 | 0 | 0 | 0 | 8 |
| Sept 2021 | 10 | 16 | 10 | 2 | 3 | 31 |
| SW Monsoon 2021 | 13 (13) | 55 | 20 | 4 | 4 | 83 |
District South 24 Parganas had the highest number of high rainfall instances in this region at 13. Kolkata had 11, North 24 Parganas had 10, Paschim Medinipur had 9, while Bankura, East Medinipur and Haora had eight such instances each. The districts of Birbhum, Murshidabad and Nadia had the least, one instance each. Seven districts had at least one such instance in each of the four monsoon months. It can be seen that the high rainfall instances were fairly distributed in this region both spatially and temporally. Haora district had two days when rainfall exceeded 200 mm each. Three of the four such instances in this region happened in September.
Odisha
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 6 (30) | 7 | 0 | 0 | 0 | 7 |
| July 2021 | 15 | 14 | 3 | 0 | 0 | 17 |
| Aug 2021 | 2 | 3 | 0 | 0 | 0 | 3 |
| Sept 2021 | 22 | 21 | 10 | 6 | 3 | 40 |
| SW Monsoon 2021 | 27 (30) | 45 | 13 | 6 | 3 | 67 |
So Odisha had the highest number (40) of about 60% of the total 67 instances in the last monsoon month, that is Sept. All the instances of rainfall over 150 mm happened in Sept. Kendrapara district had six instances when rainfall was over 50 mm in a day, and had such instances in all the four monsoon months. No other district had more than four such instances.
Jharkhand
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 13 (24) | 15 | 0 | 0 | 0 | 15 |
| July 2021 | 17 | 19 | 5 | 2 | 0 | 26 |
| Aug 2021 | 8 | 8 | 2 | 0 | 0 | 10 |
| Sept 2021 | 20 | 17 | 2 | 1 | 2 | 22 |
| SW Monsoon 2021 | 23 (24) | 59 | 9 | 3 | 2 | 73 |
While the number of high rainfall instances in Jharkhand are higher than Odisha even with lesser number of districts, the instances are much more well distributed among the four monsoon months. Two districts (Jamtara and Sahebganj) have six such instances each and Giridih had five such instances, rest of the districts had four or less number of high rainfall instances. Lohardaga had four instances, but three of them had rainfall in the range 100-150 mm, no other districts had so many such instances.
Bihar
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 27 (38) | 38 | 2 | 0 | 2 | 42 |
| July 2021 | 16 | 23 | 1 | 0 | 0 | 24 |
| Aug 2021 | 16 | 25 | 1 | 0 | 0 | 26 |
| Sept 2021 | 3 | 3 | 0 | 0 | 0 | 3 |
| SW Monsoon 2021 | 33 (38) | 89 | 4 | 0 | 2 | 95 |
In Bihar, maximum instances happened in June 2021 and least number of instances happened in Sept 2021. Gopalganj and Madhepura are the only two districts that had such instances in all the four SW Monsoon months. Vaishali had the highest number of high rainfall days at 9, followed by Kishanganj with 8. Vaishali also had the maximum (4) number of instances when rainfall was in excess of 100 mm in a day.
East Uttar Pradesh
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 25 (42) | 31 | 3 | 1 | 0 | 35 |
| July 2021 | 23 | 34 | 2 | 0 | 0 | 36 |
| Aug 2021 | 21 | 34 | 4 | 0 | 0 | 38 |
| Sept 2021 | 30 | 28 | 13 | 3 | 1 | 45 |
| SW Monsoon 2021 | 39 (42) | 127 | 22 | 4 | 1 | 154 |
Eastern UP had much higher number of high rainfall district days in Sept than Bihar. In fact the numbers here in Sept were the highest among the four SW monsoon months. At least nine districts in East UP had such high rainfall days in all the four SW Monsoon months. Chitrakoot had by far the highest number of such instances (12), followed by Pratapgarh and Mahajganj districts.
West Uttar Pradesh
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 4 (32) | 4 | 0 | 0 | 0 | 4 |
| July 2021 | 16 | 20 | 2 | 0 | 0 | 22 |
| Aug 2021 | 12 | 13 | 2 | 0 | 0 | 15 |
| Sept 2021 | 5 | 5 | 0 | 0 | 0 | 5 |
| SW Monsoon 2021 | 24 (32) | 42 | 4 | 0 | 0 | 46 |
As we move from East to West UP, there is a huge drop in instances of high rainfall days, the least number of such instances are in June, closely followed by September. No district had such instances in all four SW Monsoon months. The highest number of high rainfall days were in Mahamayanagar and Muzaffarnagar (5 each).
EAST INDIA
| State | Districts that had over 50 mm rainfall at least on one day in SW Monsoon 2021 (Total no of districts) | No of district days when rainfall 50-100 mm | No of district days when Rainfall 100-150 mm | No of district days when Rainfall 150-200 | No of district days when Rainfall over 200 mm | Total no of district days when rainfall over 50 mm |
| Sub Himalayan W Bengal | 5 (6) | 32 | 10 | 0 | 0 | 42 |
| Gangetic W Bengal | 13 (13) | 55 | 20 | 4 | 4 | 83 |
| Odisha | 27 (30) | 45 | 13 | 6 | 3 | 67 |
| Jharkhand | 23 (24) | 59 | 9 | 3 | 2 | 73 |
| Bihar | 33 (38) | 89 | 4 | 0 | 2 | 95 |
| East UP | 39 (42) | 127 | 22 | 4 | 1 | 154 |
| West UP | 24 (32) | 42 | 4 | 0 | 0 | 46 |
| East India | 164 (185) | 449 | 82 | 17 | 12 | 560 |
So almost 89% of districts in East India had high rainfall days in SW Monsoon 2021. However, number of such instances per district is lower than that in NE India even in a year when monsoon was deficit in NE India and surplus in East India.
NORTH INDIA: Uttarakhand
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 10 (13) | 12 | 1 | 0 | 0 | 13 |
| July 2021 | 9 | 19 | 0 | 0 | 0 | 19 |
| Aug 2021 | 4 | 8 | 0 | 1 | 0 | 9 |
| Sept 2021 | 1 | 0 | 0 | 0 | 0 | 1 |
| SW Monsoon 2021 | 13 (13) | 40 | 1 | 1 | 0 | 42 |
Uttarakhand had 2% below normal rainfall during SW Monsoon 2021 and None of the districts had high rainfall days in all the four monsoon months. Bageshwar had the highest number of such days at nine, followed by Nainital with seven. Bageshwar had by far the highest rainfall of over 2200 mm, and highest surplus % at 162%, while Nainital had 12% below normal rainfall.
Haryana
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 1 (22) | 1 | 0 | 0 | 0 | 1 |
| July 2021 | 17 | 25 | 5 | 0 | 0 | 30 |
| Aug 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| Sept 2021 | 10 | 13 | 0 | 0 | 0 | 13 |
| SW Monsoon 2021 | 20 (22) | 41 | 5 | 0 | 0 | 46 |
Sonipat and Jhajhar districts had the highest (4 each) number of high rainfall days. Jhajhar also had the highest Surplus % rainfall at 102%. However, the highest rainfall district was Yamunanagar.
Chandigarh Chanidgarh had no high rainfall days during SW Monsoon 2021, rainfall was 29% below normal.
Delhi
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (9) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 8 | 18 | 0 | 0 | 0 | 18 |
| Aug 2021 | 6 | 5 | 2 | 0 | 0 | 7 |
| Sept 2021 | 8 | 15 | 1 | 1 | 0 | 17 |
| SW Monsoon 2021 | 9 (9) | 38 | 3 | 1 | 0 | 42 |
North Delhi district in Delhi had the highest number (7) of high rainfall days, while New Delhi had the least at 2. North Delhi also had the highest % surplus rainfall at 100%. Central Delhi had the highest rainfall at over 1200 mm, with the lone day with over 150 mm rainfall among the nine districts was in Central Delhi, on Sept 2, while Sept 1 also had over 100 mm rainfall here.
Punjab
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (22) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 10 | 16 | 0 | 0 | 0 | 16 |
| Aug 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sept 2021 | 9 | 10 | 1 | 0 | 0 | 11 |
| SW Monsoon 2021 | 13 (22) | 26 | 1 | 0 | 0 | 27 |
Punjab had 7% below normal rainfall in SW Monsoon. Kapurthala had the highest surplus rainfall % at 165% and the highest number (5) of high rainfall days among all the Punjab districts. Pathankot had the highest rainfall among all the districts, and had three high rainfall days.
Himachal Pradesh
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 1 (12) | 1 | 0 | 0 | 0 | 1 |
| July 2021 | 6 | 10 | 2 | 0 | 0 | 12 |
| Aug 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| Sept 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| SW Monsoon 2021 | 6 (12) | 15 | 2 | 0 | 0 | 17 |
Sirmaur district had the highest number of high rainfall days among HP districts at 5, followed by Solan and Kangra each having four such days. Both the above 100 mm days were in Kangra, both in July 2021. Kangra had the highest rainfall among HP districts in SW Monsoon 2021, but Kullu had the highest % above normal rainfall at 40%, but had no high rainfall days.
Jammu & Kashmir
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (20) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 7 | 13 | 2 | 0 | 1 | 16 |
| Aug 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| Sept 2021 | 3 | 4 | 0 | 0 | 0 | 4 |
| SW Monsoon 2021 | 7 (20) | 19 | 2 | 0 | 1 | 22 |
J&K had 29% below normal rainfall in SW Monsoon 2021. Riasi district had the highest number (6) of high rainfall days in SW Monsoon, followed by Samba and Udhampur, each having 4 such days. The lone day with over 200 mm rainfall in a day was in Udhampur district, on July 25, when rainfall was 232.4 mm, as per IMD’s daily district wise rainfall bulletin of that day. Riasi had 19% below normal rainfall and Samba had 15% below normal rainfall, while Udhampur had 14% above normal rainfall. Riasi had almost 1300 mm rainfall during SW Monsoon 2021, the highest among all the districts of J&K.
Ladakh The two districts of Ladakh had no high rainfall days in SW monsoon 2021. The total monsoon rainfall of Kargil was 32 mm and that of Leh & Ladakh 19.1 mm, 18% and 49% below normal respectively.
NORTH INDIA
| State/ Union Territory | Districts that had over 50 mm rainfall at least on one day in SW Monsoon 2021 (Total no of districts) | No of district days when rainfall 50-100 mm | No of district days when Rainfall 100-150 mm | No of district days when Rainfall 150-200 | No of district days when Rainfall over 200 mm | Total no of district days when rainfall over 50 mm |
| Uttarakhand | 13 (13) | 40 | 1 | 1 | 0 | 42 |
| Haryana | 20 (22) | 41 | 5 | 0 | 0 | 46 |
| Chandigarh | 0 (1) | 0 | 0 | 0 | 0 | 0 |
| Delhi | 9 (9) | 38 | 3 | 1 | 0 | 42 |
| Punjab | 13 (22) | 26 | 1 | 0 | 0 | 27 |
| Himachal Pradesh | 6 (12) | 15 | 2 | 0 | 0 | 17 |
| Jammu & Kashmir | 7 (20) | 19 | 2 | 0 | 1 | 22 |
| Ladakh | 0 (2) | 0 | 0 | 0 | 0 | 0 |
| North India | 68 (101) | 179 | 14 | 2 | 1 | 196 |
North India had broadly below normal monsoon and this is reflected here in the least % of districts with and least per district number of high rainfall days in SW Monsoon 2021.
WEST INDIA: West Rajasthan This traditionally low rainfall area of India with ten districts had no days with district rainfall over 50 mm on any day in SW Monsoon 2021 in any district. This in SW Monsoon 2021 when seasonal rainfall in this region was 20% above normal. The norm for high rainfall day needs to be reduced in case of regions like Ladakh and W Rajasthan, but question is what can be considered a high rainfall day for these regions?
East Rajasthan
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (23) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 11 | 15 | 0 | 0 | 0 | 15 |
| Aug 2021 | 14 | 29 | 6 | 0 | 0 | 35 |
| Sept 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| SW Monsoon 2021 | 16 (23) | 46 | 6 | 0 | 0 | 52 |
East Rajasthan had 16% above normal rainfall in SW Monsoon, with four districts having rainfall over 1000 mm, Pratapgarh having the highest rainfall. Baran district had the highest number of high rainfall days at 8 among all the districts of East Rajasthan. Jhalawar had seven, while Bundi and Kota had six each. First seven days of August had the highest number of high rainfall days in this region.
West Madhya Pradesh
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 3 (31) | 3 | 0 | 0 | 0 | 3 |
| July 2021 | 21 | 28 | 7 | 1 | 0 | 36 |
| Aug 2021 | 16 | 23 | 5 | 2 | 1 | 31 |
| Sept 2021 | 8 | 9 | 0 | 0 | 0 | 9 |
| SW Monsoon 2021 | 27 (31) | 63 | 12 | 3 | 1 | 79 |
While W MP had Normal rainfall during SW Monsoon 2021, Guna (84% above normal, over 1600 mm), Sheopur (100% above normal, over 1300 mm) and Shivpuri (62% above normal, over 1250 mm) had large excess and highest rainfall among all the districts of W MP. Guna also had the highest number (8) of high rainfall days: first seven days of August (including Aug 3, 6 and 7 when rainfall was in the range 100-150 mm) and July 27 (rainfall over 150 mm). Agar-Malwa, Rajgarh and Sheopur each had six such instances. In Sheopur, this included Aug 3 when rainfall was 195 mm; July 31 and Aug 2 when rainfall was in the range 100-150 mm. Shivpuri district has the highest day rainfall among all the districts of W MP on Aug 3, when rainfall was 312.8 mm.
East MP
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 6 (20) | 9 | 1 | 0 | 0 | 10 |
| July 2021 | 11 | 12 | 1 | 0 | 0 | 13 |
| Aug 2021 | 6 | 5 | 3 | 0 | 0 | 8 |
| Sept 2021 | 6 | 6 | 0 | 0 | 0 | 6 |
| SW Monsoon 2021 | 18 (20) | 32 | 5 | 0 | 0 | 37 |
Diu and Daman
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 1 (2) | 0 | 1 | 0 | 0 | 1 |
| July 2021 | 1 | 4 | 0 | 0 | 1 | 5 |
| Aug 2021 | 1 | 1 | 1 | 2 | 0 | 4 |
| Sept 2021 | 2 | 6 | 0 | 0 | 1 | 7 |
| SW Monsoon 2021 | 2 (2) | 11 | 2 | 2 | 2 | 17 |
Gujarat Region
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 3 (21) | 3 | 0 | 0 | 0 | 3 |
| July 2021 | 14 | 17 | 4 | 0 | 0 | 21 |
| Aug 2021 | 4 | 7 | 0 | 0 | 0 | 7 |
| Sept 2021 | 10 | 20 | 7 | 0 | 0 | 27 |
| SW Monsoon 2021 | 17 (21) | 47 | 11 | 0 | 0 | 58 |
Dadar & Nagarhaveli
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 1 (1) | 1 | 0 | 0 | 0 | 1 |
| July 2021 | 1 | 3 | 2 | 0 | 0 | 5 |
| Aug 2021 | 1 | 2 | 0 | 0 | 0 | 2 |
| Sept 2021 | 1 | 4 | 2 | 1 | 1 | 8 |
| SW Monsoon 2021 | 1 (1) | 10 | 4 | 1 | 1 | 16 |
Saurashtra and Kutch
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (13) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 5 | 5 | 1 | 0 | 0 | 6 |
| Aug 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sept 2021 | 10 | 24 | 10 | 2 | 0 | 36 |
| SW Monsoon 2021 | 10 (13) | 29 | 11 | 2 | 0 | 42 |
Goa
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 2 (2) | 9 | 5 | 0 | 0 | 14 |
| July 2021 | 2 | 7 | 9 | 1 | 0 | 17 |
| Aug 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sept 2021 | 2 | 3 | 0 | 0 | 0 | 3 |
| SW Monsoon 2021 | 2 (2) | 19 | 14 | 1 | 0 | 34 |
Konkan
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 7 (7) | 32 | 14 | 0 | 2 | 48 |
| July 2021 | 7 | 26 | 19 | 8 | 3 | 56 |
| Aug 2021 | 4 | 5 | 0 | 0 | 0 | 5 |
| Sept 2021 | 7 | 24 | 7 | 1 | 0 | 32 |
| SW Monsoon 2021 | 7 (7) | 87 | 40 | 9 | 5 | 141 |
Madhya Maharashtra
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 3 (10) | 8 | 1 | 0 | 0 | 9 |
| July 2021 | 4 | 7 | 3 | 0 | 1 | 11 |
| Aug 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| Sept 2021 | 4 | 5 | 1 | 0 | 0 | 6 |
| SW Monsoon 2021 | 8 (10) | 22 | 5 | 0 | 1 | 28 |
Marathwada
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (8) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 3 | 5 | 1 | 0 | 0 | 6 |
| Aug 2021 | 3 | 3 | 0 | 0 | 0 | 3 |
| Sept 2021 | 6 | 16 | 0 | 0 | 0 | 16 |
| SW Monsoon 2021 | 6 (8) | 24 | 1 | 0 | 0 | 25 |
Vidarbha
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (11) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 6 | 7 | 0 | 0 | 0 | 7 |
| Aug 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sept 2021 | 3 | 3 | 0 | 0 | 0 | 3 |
| SW Monsoon 2021 | 8 (11) | 10 | 0 | 0 | 0 | 10 |
Chhattisgarh
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 11 (27) | 12 | 0 | 0 | 0 | 12 |
| July 2021 | 14 | 20 | 2 | 0 | 0 | 22 |
| Aug 2021 | 5 | 7 | 0 | 0 | 0 | 7 |
| Sept 2021 | 14 | 16 | 2 | 0 | 0 | 18 |
| SW Monsoon 2021 | 24 (27) | 55 | 4 | 0 | 0 | 59 |
WEST INDIA
| State | Districts that had over 50 mm rainfall at least on one day in SW Monsoon 2021 (Total no of districts) | No of district days when rainfall 50-100 mm | No of district days when Rainfall 100-150 mm | No of district days when Rainfall 150-200 | No of district days when Rainfall over 200 mm | Total no of district days when rainfall over 50 mm |
| W Rajasthan | 0 (10) | 0 | 0 | 0 | 0 | 0 |
| E Rajasthan | 16 (23) | 46 | 6 | 0 | 0 | 52 |
| W Madhya Pradesh | 27 (31) | 63 | 12 | 3 | 1 | 79 |
| E Madhya Pradesh | 18 (20) | 32 | 5 | 0 | 0 | 37 |
| Diu Daman | 2 (2) | 11 | 2 | 2 | 2 | 17 |
| Gujarat Region | 17 (21) | 47 | 11 | 0 | 0 | 58 |
| Dadra Nagarhaveli | 1 (1) | 10 | 4 | 1 | 1 | 16 |
| Saurashtra & Kutch | 10 (13) | 29 | 11 | 2 | 0 | 42 |
| Goa | 2 (2) | 19 | 14 | 1 | 0 | 34 |
| Konkan | 7 (7) | 87 | 40 | 9 | 5 | 141 |
| Madhya Maharashtra | 8 (10) | 22 | 5 | 0 | 1 | 28 |
| Marathawada | 6 (8) | 24 | 1 | 0 | 0 | 25 |
| Vidarbha | 8 (11) | 10 | 0 | 0 | 0 | 10 |
| Chhattisgarh | 24 (27) | 55 | 4 | 0 | 0 | 59 |
| West India | 146 (186) | 455 | 115 | 18 | 10 | 598 |
SOUTH INDIA: Coastal Andhra Pradesh
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (9) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 2 | 3 | 0 | 0 | 0 | 3 |
| Aug 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sept 2021 | 6 | 8 | 2 | 0 | 0 | 10 |
| SW Monsoon 2021 | 7 (9) | 11 | 2 | 0 | 0 | 13 |
Telangana
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 16 (33) | 20 | 0 | 0 | 0 | 20 |
| July 2021 | 28 | 43 | 3 | 3 | 0 | 49 |
| Aug 2021 | 8 | 9 | 0 | 0 | 0 | 9 |
| Sept 2021 | 22 | 26 | 11 | 2 | 0 | 39 |
| SW Monsoon 2021 | 29 (33) | 98 | 14 | 5 | 0 | 117 |
Rayalseema There were no high rainfall events in any of the four districts of Rayalseema during the SW Monsoon 2021.
Tamil Nadu
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (38) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 5 | 5 | 0 | 0 | 0 | 5 |
| Aug 2021 | 1 | 1 | 0 | 0 | 0 | 1 |
| Sept 2021 | 3 | 3 | 0 | 0 | 0 | 3 |
| SW Monsoon 2021 | 8 (38) | 9 | 0 | 0 | 0 | 9 |
Puducherry
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 1 (4) | 3 | 0 | 0 | 0 | 3 |
| July 2021 | 2 | 4 | 0 | 0 | 0 | 4 |
| Aug 2021 | 3 | 5 | 0 | 0 | 0 | 5 |
| Sept 2021 | 3 | 5 | 0 | 0 | 0 | 5 |
| SW Monsoon 2021 | 3 (4) | 17 | 0 | 0 | 0 | 17 |
Coastal Karnataka
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 3 (3) | 18 | 0 | 0 | 0 | 18 |
| July 2021 | 3 | 16 | 4 | 0 | 0 | 20 |
| Aug 2021 | 3 | 5 | 0 | 0 | 0 | 5 |
| Sept 2021 | 2 | 4 | 0 | 0 | 0 | 4 |
| SW Monsoon 2021 | 3 (3) | 43 | 4 | 0 | 0 | 47 |
North Interior Karnataka
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 3 (11) | 3 | 0 | 0 | 0 | 3 |
| July 2021 | 3 | 4 | 0 | 0 | 0 | 4 |
| Aug 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sept 2021 | 1 | 1 | 0 | 0 | 0 | 1 |
| SW Monsoon 2021 | 6 (11) | 8 | 0 | 0 | 0 | 8 |
South Interior Karnataka
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 3 (16) | 6 | 0 | 0 | 0 | 6 |
| July 2021 | 4 | 12 | 1 | 0 | 0 | 13 |
| Aug 2021 | 3 | 3 | 0 | 0 | 0 | 3 |
| Sept 2021 | 2 | 2 | 0 | 0 | 0 | 2 |
| SW Monsoon 2021 | 6 (16) | 23 | 1 | 0 | 0 | 24 |
Kerala
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 9 (14) | 23 | 0 | 0 | 0 | 23 |
| July 2021 | 13 | 40 | 2 | 0 | 0 | 42 |
| Aug 2021 | 8 | 18 | 0 | 0 | 0 | 18 |
| Sept 2021 | 6 | 7 | 1 | 0 | 0 | 8 |
| SW Monsoon 2021 | 14 (14) | 88 | 3 | 0 | 0 | 91 |
Andaman & Nicobar Islands
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 3 (3) | 4 | 0 | 0 | 0 | 4 |
| July 2021 | 3 | 7 | 2 | 0 | 0 | 7 |
| Aug 2021 | 2 | 7 | 0 | 0 | 0 | 7 |
| Sept 2021 | 3 | 10 | 0 | 0 | 0 | 10 |
| SW Monsoon 2021 | 3 (3) | 27 | 1 | 0 | 0 | 28 |
Lakshadweep Islands
| Month | No of districts that had over 50 mm rainfall in at least one day in monsoon 2021 (total no of districts) | No of district days when rainfall 50-100 mm | No of district days when rainfall 100-150 mm | No of district days when rainfall 150-200 mm | No of district days when rainfall 200+ mm | TOTAL no of dist days when rainfall over 50 mm |
| June 2021 | 0 (1) | 0 | 0 | 0 | 0 | 0 |
| July 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| Aug 2021 | 1 | 1 | 0 | 0 | 0 | 1 |
| Sept 2021 | 0 | 0 | 0 | 0 | 0 | 0 |
| SW Monsoon 2021 | 1 (1) | 1 | 0 | 0 | 0 | 1 |
SOUTH INDIA
| State | Districts that had over 50 mm rainfall at least on one day in SW Monsoon 2021 (Total no of districts) | No of district days when rainfall 50-100 mm | No of district days when Rainfall 100-150 mm | No of district days when Rainfall 150-200 | No of district days when Rainfall over 200 mm | Total no of district days when rainfall over 50 mm |
| Coastal Andhra Pradesh | 7 (9) | 11 | 2 | 0 | 0 | 11 |
| Rayalseema | 0 (4) | 0 | 0 | 0 | 0 | 0 |
| Telangana | 29 (33) | 98 | 14 | 5 | 0 | 117 |
| Tamil Nadu | 8 (38) | 9 | 0 | 0 | 0 | 9 |
| Puducherry | 3 (4) | 17 | 0 | 0 | 0 | 17 |
| Coastal Karnataka | 3 (3) | 43 | 4 | 0 | 0 | 47 |
| North Interior Karnataka | 6 (11) | 8 | 0 | 0 | 0 | 8 |
| South Interior Karnataka | 6 (16) | 23 | 1 | 0 | 0 | 27 |
| Kerala | 14 (14) | 88 | 3 | 0 | 0 | 91 |
| Lakshadweep | 1 (1) | 1 | 0 | 0 | 0 | 1 |
| Andaman & Nicobar | 3 (3) | 27 | 1 | 0 | 0 | 28 |
| South India | 80 (136) | 325 | 25 | 5 | 0 | 355 |
INDIA
| Region | Districts that had over 50 mm rainfall at least on one day in SW Monsoon 2021 (Total no of districts) | No of district days when rainfall 50-100 mm | No of district days when Rainfall 100-150 mm | No of district days when Rainfall 150-200 | No of district days when Rainfall over 200 mm | Total no of district days when rainfall over 50 mm |
| North East | 69 (86) | 304 | 52 | 11 | 3 | 370 |
| East | 164 (185) | 449 | 82 | 17 | 12 | 560 |
| North | 68 (101) | 179 | 14 | 2 | 1 | 196 |
| West | 146 (186) | 455 | 115 | 18 | 10 | 598 |
| South | 80 (136) | 325 | 25 | 5 | 0 | 355 |
| INDIA | 527 (694) | 1712 | 288 | 53 | 26 | 2079 |
SANDRP (ht.sandrp@gmail.com)
REFERENCES:
[i] https://sandrp.in/2021/07/23/high-rainfall-days-in-indias-districts-in-june-2021/
[ii] https://sandrp.in/2021/08/06/july-2021-high-rainfall-days-in-indias-districts/
[iii] https://sandrp.in/2021/09/02/high-rainfall-days-in-indias-districts-in-august-2021/
[iv] https://sandrp.in/2021/10/07/high-rainfall-days-in-indias-districts-in-sept-2021/
[v] https://sandrp.in/2021/06/30/june-2021-district-wise-rainfall-in-in-indias-sw-monsoon/
[vi] https://sandrp.in/2021/07/31/june-july-2021-district-wise-sw-monsoon-rainfall-in-india/
[vii] https://sandrp.in/2021/09/01/june-aug-2021-district-wise-rainfall-in-indias-sw-monsoon/
[viii] https://sandrp.in/2021/09/30/sw-monsoon-2021-district-wise-rainfall-in-india/
[ix] https://www.indiaspend.com/earthcheck/climate-change-is-making-indias-monsoon-more-erratic-780356
SANDRP 