Light Rainfall For Mumbai Till Weekend: Uptick Follows Next Week
Sep 9, 2025, 1:11 PM | Skymet Weather Team
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Representational Image: AI-Skymet

Mumbai has received mostly light rainfall during the month of Sep 2025 so far. Santacruz did receive moderate showers on two days, and the observatory has accumulated a total of 118.3 mm rainfall between 01st and 09th Sep 2025. The other observatory at the Regional Center, Colaba, could manage only 40 mm rainfall during this period. The capital city has a normal of 341.4 mm rainfall in the month of September. A spell of light rains is likely to continue during this week for most parts of the city.

The variability of rainfall for Mumbai is quite high in September. Normal withdrawal of monsoon takes place during the first week of October. Occasionally, the monsoon starts retreating during the last week of September as well. The rainfall amount varies accordingly during the month of September. In Sep 2019, the airport observatory recorded the highest-ever deluge of 1115.7 mm, and in 2018, it slumped to just 73.1 mm—the lowest in the last two decades or so. For the last six years in a row, the city has registered above-normal rainfall in the month of September, and it exceeded 400 mm during all these years.

Mumbai receives heavy rainfall when the off-shore trough along the Konkan region becomes strong. Also, the weather systems forming over the Bay of Bengal strengthen the monsoon stream while getting positioned over parts of Central Maharashtra and Central Madhya Pradesh. There was a cyclonic circulation over the Bay of Bengal, and it is now lying over coastal parts of Odisha and Andhra Pradesh. This system will slowly move inland and is likely to get located over Vidarbha-Marathwada and Telangana during the end of this week. The monsoon activity is likely to get revived for Mumbai and suburbs between 14th and 16th Sep. Moderate rainfall may continue even thereafter, for the subsequent 2–3 days.