Key Highlights
The India Meteorological Department (IMD) has forecasted widespread to fairly widespread light to moderate rain and thunderstorms in South Bengal from September 26 to October 2, 2025, coinciding with the peak days of Durga Puja festivities
Isolated heavy to very heavy rainfall events are expected, especially along coastal districts such as South 24 Parganas, North 24 Parganas, and Kolkata, with the possibility of isolated extremely heavy rain on September 27
North Bengal will simultaneously experience scattered to fairly widespread rain with isolated heavy showers, risking localized disruptions
Weather Systems Influencing the Region
A large upper air cyclonic circulation and evolving low-pressure areas over the Bay of Bengal are contributing to unsettled weather in the region, expected to intensify into a depression by early October
These systems bring moisture influx and active monsoon-like conditions causing intermittent rain bursts, gusty winds up to 30-40 km/h, and lightning prone thunderstorms
Implications for Durga Puja
With traditional outdoor events, processions, and pandal hopping at the heart of Durga Puja, the continuing rain may dampen celebrations, affect crowd management, and necessitate contingency plans
Authorities and organisers are urged to remain vigilant, focus on public safety, and ensure robust drainage and emergency response systems to mitigate rain-related disruptions
Devotees and tourists should plan accordingly with weather-resistant attire and flexible schedules
Overall Outlook
Despite the rain, seasonal rainfall remains within normal range for the region with some positive departures in South Bengal, while North Bengal may see slight deficits early on
Rainfall is anticipated to moderate but remain above average in the first week of October, requiring ongoing monitoring by meteorological agencies
Sources: IMD Kolkata, Economic Times, Mausam, Indian Express