With 606 mm of rain, Mumbai records second wettest September since 2021

According to the Brihanmumbai Municipal Corporation’s automatic weather stations, the heaviest downpour was recorded in the western suburbs at an average of 99.44 mm of rain, followed by an average of 80 mm in the eastern suburbs, and 74 mm in the island city division.

Owing to the heavy showers over the weekend, preceded by intermittent spells of heavy rain throughout the month, Mumbai has until Monday (September 29) reported 606.1 mm of rain this month. Prior to this, the wettest September was recorded in 2024 at a total of 660 mm, followed by 2021 when the city received 744.2 mm of rain during the month.

Meanwhile, having received 586 mm rain already, this is also Colaba’s third wettest September since 2006.
For the record, this is significantly higher than the monthly average rain received in September which stands at 380 mm, according to IMD’s records for the past 20 years.

Overall, the Santacruz weather station has received 3,100.4 mm of rain since June, as per data collected till Monday morning. Officials said that this marks a positive departure of over 787 mm above the normal. Meanwhile, the Colaba station has received 2,245 mm of rain so far, which is a positive departure of 155 mm above the normal, they added.

This comes a day after the city’s Colaba station clocked the second highest single-day rain figure in the area since 2021, receiving over 120 mm of rain in a 24-hour period.

However, starting Tuesday, rain is set to subdue across the Mumbai Metropolitan Region (MMR) with the IMD lifting the yellow alert warnings issued for the districts. On Monday too, heavy showers eluded the city with Mumbai receiving only 0.1 mm rain between 8.30 am and 5.30 pm, nudging the IMD to downgrade the orange alert to a yellow alert on Monday.

According to meteorologists, city will only experience light to moderate showers in the coming days until Thursday at least.