Monsoon · Rainfall

High Rainfall days in India’s districts in SW Monsoon 2021

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.

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20218 (16)1731021
July 2021780008
Aug 202173441039
Sept 2021450005
SW Monsoon 202111 (16)6472073

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202116 (27)35101046
July 2021152830031
Aug 2021132600026
Sept 2021131611018
SW Monsoon 202122 (27)1051420121

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20216 (7)1792331
July 202141130014
Aug 2021624125041
Sept 2021110001
SW Monsoon 20217 (7)53247387

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20212 (11)20002
July 2021450005
Aug 2021331004
Sept 2021220002
SW Monsoon 20218 (11)1210013

Manipur

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20214 (9)1200012
July 2021220002
Aug 2021472009
Sept 2021000000
SW Monsoon 20216 (9)2120023

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20212 (8)20002
July 2021690009
Aug 2021581009
Sept 2021671008
SW Monsoon 20217 (8)2620028

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20211 (4)10001
July 2021432005
Aug 2021440004
Sept 2021220002
SW Monsoon 20214 (4)1020012

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20214 (4)50005
July 2021340004
Aug 2021230003
Sept 2021110001
SW Monsoon 20214 (4)1300013

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.

StateDistricts 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 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Arunachal Pradesh11 (16)6472073
Assam22 (27)1051420121
Meghalaya7 (7)53247387
Nagaland8 (11)1210013
Manipur6 (9)2120023
Mizoram7 (8)2620028
Tripura4 (4)1020012
Sikkim4 (4)1300013
North East India69 (86)30452113370

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20214 (6)44008
July 20213820010
Aug 202151920021
Sept 2021312003
SW Monsoon 20215 (6)32100042

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202110 (13)1440018
July 2021121762126
Aug 2021780008
Sept 20211016102331
SW Monsoon 202113 (13)55204483

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20216 (30)70007
July 2021151430017
Aug 2021230003
Sept 20212221106340
SW Monsoon 202127 (30)45136367

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202113 (24)1500015
July 2021171952026
Aug 20218820010
Sept 2021201721222
SW Monsoon 202123 (24)5993273

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202127 (38)3820242
July 2021162310024
Aug 2021162510026
Sept 2021330003
SW Monsoon 202133 (38)8940295

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202125 (42)3131035
July 2021233420036
Aug 2021213440038
Sept 20213028133145
SW Monsoon 202139 (42)1272241154

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20214 (32)40004
July 2021162020022
Aug 2021121320015
Sept 2021550005
SW Monsoon 202124 (32)4240046

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

StateDistricts 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 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Sub Himalayan W Bengal5 (6)32100042
Gangetic W Bengal13 (13)55204483
Odisha27 (30)45136367
Jharkhand23 (24)5993273
Bihar33 (38)8940295
East UP39 (42)1272241154
West UP24 (32)4240046
East India164 (185)449821712560

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202110 (13)1210013
July 202191900019
Aug 2021480109
Sept 2021100001
SW Monsoon 202113 (13)4011042

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20211 (22)10001
July 2021172550030
Aug 2021220002
Sept 2021101300013
SW Monsoon 202120 (22)4150046

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (9)00000
July 202181800018
Aug 2021652007
Sept 202181511017
SW Monsoon 20219 (9)3831042

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (22)00000
July 2021101600016
Aug 2021000000
Sept 202191010011
SW Monsoon 202113 (22)2610027

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20211 (12)10001
July 202161020012
Aug 2021220002
Sept 2021220002
SW Monsoon 20216 (12)1520017

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (20)00000
July 202171320116
Aug 2021220002
Sept 2021340004
SW Monsoon 20217 (20)1920122

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 TerritoryDistricts 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 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Uttarakhand13 (13)4011042
Haryana20 (22)4150046
Chandigarh0 (1)00000
Delhi9 (9)3831042
Punjab13 (22)2610027
Himachal Pradesh6 (12)1520017
Jammu & Kashmir7 (20)1920122
Ladakh0 (2)00000
North India68 (101)1791421196

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (23)00000
July 2021111500015
Aug 2021142960035
Sept 2021220002
SW Monsoon 202116 (23)4660052

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20213 (31)30003
July 2021212871036
Aug 2021162352131
Sept 2021890009
SW Monsoon 202127 (31)63123179

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

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20216 (20)910010
July 2021111210013
Aug 2021653008
Sept 2021660006
SW Monsoon 202118 (20)3250037

Diu and Daman

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20211 (2)01001
July 2021140015
Aug 2021111204
Sept 2021260017
SW Monsoon 20212 (2)1122217

Gujarat Region

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20213 (21)30003
July 2021141740021
Aug 2021470007
Sept 2021102070027
SW Monsoon 202117 (21)47110058

Dadar & Nagarhaveli

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20211 (1)10001
July 2021132005
Aug 2021120002
Sept 2021142118
SW Monsoon 20211 (1)1041116

Saurashtra and Kutch

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (13)00000
July 2021551006
Aug 2021000000
Sept 20211024102036
SW Monsoon 202110 (13)29112042

Goa

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20212 (2)950014
July 20212791017
Aug 2021000000
Sept 2021230003
SW Monsoon 20212 (2)19141034

Konkan

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20217 (7)32140248
July 2021726198356
Aug 2021450005
Sept 202172471032
SW Monsoon 20217 (7)874095141

Madhya Maharashtra

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20213 (10)81009
July 20214730111
Aug 2021220002
Sept 2021451006
SW Monsoon 20218 (10)2250128

Marathwada

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (8)00000
July 2021351006
Aug 2021330003
Sept 202161600016
SW Monsoon 20216 (8)2410025

Vidarbha

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (11)00000
July 2021670007
Aug 2021000000
Sept 2021330003
SW Monsoon 20218 (11)1000010

Chhattisgarh

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202111 (27)1200012
July 2021142020022
Aug 2021570007
Sept 2021141620018
SW Monsoon 202124 (27)5540059

WEST INDIA

StateDistricts 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 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
W Rajasthan0 (10)00000
E Rajasthan16 (23)4660052
W Madhya Pradesh27 (31)63123179
E Madhya Pradesh18 (20)3250037
Diu Daman2 (2)1122217
Gujarat Region17 (21)47110058
Dadra Nagarhaveli1 (1)1041116
Saurashtra & Kutch10 (13)29112042
Goa2 (2)19141034
Konkan7 (7)874095141
Madhya Maharashtra8 (10)2250128
Marathawada6 (8)2410025
Vidarbha8 (11)1000010
Chhattisgarh24 (27)5540059
West India146 (186)4551151810598

SOUTH INDIA: Coastal Andhra Pradesh

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (9)00000
July 2021230003
Aug 2021000000
Sept 20216820010
SW Monsoon 20217 (9)1120013

Telangana

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 202116 (33)2000020
July 2021284333049
Aug 2021890009
Sept 20212226112039
SW Monsoon 202129 (33)981450117

Rayalseema There were no high rainfall events in any of the four districts of Rayalseema during the SW Monsoon 2021.

Tamil Nadu

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (38)00000
July 2021550005
Aug 2021110001
Sept 2021330003
SW Monsoon 20218 (38)90009

Puducherry

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20211 (4)30003
July 2021240004
Aug 2021350005
Sept 2021350005
SW Monsoon 20213 (4)1700017

Coastal Karnataka

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20213 (3)1800018
July 202131640020
Aug 2021350005
Sept 2021240004
SW Monsoon 20213 (3)4340047

North Interior Karnataka

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20213 (11)30003
July 2021340004
Aug 2021000000
Sept 2021110001
SW Monsoon 20216 (11)80008

South Interior Karnataka

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20213 (16)60006
July 202141210013
Aug 2021330003
Sept 2021220002
SW Monsoon 20216 (16)2310024

Kerala

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20219 (14)2300023
July 2021134020042
Aug 202181800018
Sept 2021671008
SW Monsoon 202114 (14)8830091

Andaman & Nicobar Islands

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20213 (3)40004
July 2021372007
Aug 2021270007
Sept 202131000010
SW Monsoon 20213 (3)2710028

Lakshadweep Islands

MonthNo 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 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall 200+ mmTOTAL no of dist days when rainfall over 50 mm
June 20210 (1)00000
July 2021000000
Aug 2021110001
Sept 2021000000
SW Monsoon 20211 (1)10001

SOUTH INDIA

StateDistricts 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 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Coastal Andhra Pradesh7 (9)1120011
Rayalseema0 (4)00000
Telangana29 (33)981450117
Tamil Nadu8 (38)90009
Puducherry3 (4)1700017
Coastal Karnataka3 (3)4340047
North Interior Karnataka6 (11)80008
South Interior Karnataka6 (16)2310027
Kerala14 (14)8830091
Lakshadweep1 (1)10001
Andaman & Nicobar3 (3)2710028
South India80 (136)3252550355

INDIA

RegionDistricts 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 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
North East69 (86)30452113370
East164 (185)449821712560
North68 (101)1791421196
West146 (186)4551151810598
South80 (136)3252550355
INDIA527 (694)171228853262079

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

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