August Likely To Be Rainiest Month Of This Monsoon For Delhi
The Southwest Monsoon arrived on 29th June in Delhi this year, against its normal date of 27th June. Delhi was covered in the last leg of advancement along with the remaining parts of Haryana and Rajasthan. The entire season has performed quite well for the capital city. All three respective months have recorded more than normal rainfall: June +45%, July +24%, and August +45% so far. June is the least rainy and August the rainiest month of the monsoon season. August has an average of 226.8 mm, and the base station Safdarjung has logged 328.5 mm of rainfall so far. This is the second rainiest August for Delhi in the last 15 years. Last year, the city had accumulated a record highest of 390.3 mm in August.
Between 01st June and 27th August 2025, the repository observatory at Safdarjung registered 579.8 mm of rainfall against the normal of 420.6 mm, an excess of 38%. Except for South Delhi, all other nine districts recorded normal or above normal rainfall. August, being the rainiest month, achieving an excess of 45% rainfall is exceptional. Rain and thundershowers are likely on all the remaining days of August, and therefore, this month will feature as the rainiest of the season.
The monsoon trough remains the prominent trigger for rainfall. Currently, the trough is lying south of Delhi, but not very far, passing through Bikaner, Guna, Jabalpur, and further eastward. The trough is connecting two cyclonic circulations: one over South Punjab and the other over Odisha and Chhattisgarh, in association with the low pressure over that area. Additionally, a western disturbance moving across the mountains is pulling the western end of the trough northward, thereby maintaining its proximity to the capital city.
One or two spells of rain and thundershowers are likely over Delhi and its suburbs today and tomorrow, mostly during the later part of the day. The intensity and spread are expected to increase between 30th August and 01st September 2025. Therefore, August will end on a rainy note, and September will begin on a wet note, keeping comfort levels decent for Delhiites.
