|On 12th June 2017, Monsoon is set over Mumbai, 2 days after it’s normal date. There is no definite pattern of monsoon to progress, which is evident from the fact that monsoon set 2 days prior in Kerala.
Now since Mumbai is ready to take up monsoon here are some facts about rainfall during the period of June to September.
The normal date of monsoon over Mumbai is 10th June, but the dates had been fluctuating. In some years the monsoon was delayed considerably while in some years it had been very early.
Here are some statistics for onset dates over Mumbai:
1) Early onset – 29th May in the year 1952, 1956, 1872
2) Late onset – 25th June in 1962
Below is the chart of monsoon dates over Mumbai for last 67 years. (Data source: IMD)
(Click the image to see enlarge image)
The average seasonal rain that is rainfall from June to September is:
1) Santacruz is 2265 mm.
2) Colaba is 2025 mm.
The extreme rainfall events in Mumbai:
|10 June 1991
|5 July 1974
|3 Aug 1881
|10 Sept 1930
||10 June 1991
|27 July 2005
|23 Aug 1997
23 Set 1981