According to the IMD department, Kolkata will see heavy thunderstorms on Wednesday, September 24, 2025, with unsettled conditions persisting into Thursday and threatening major disruptions. Residents are urged to brace themselves for bad weather, as rain is expected to dominate the forecast for the next 48 hours.
The city will experience high temperatures around 32°C alongside the storms, with a low of 27°C, creating humid and uncomfortable conditions. The forecasted cleaner skies for other big Indian metropolises stand in sharp contrast to the current weather pattern.
What is Kolkata’s Detailed Forecast?
The forecast for Kolkata indicates a high likelihood of significant rainfall.
Today (Wednesday, September 24): The day is expected to be dominated by heavy thunderstorms. There is a 75% chance of rain during daylight hours. Winds will be easterly at around 8 mph. The chance of rain decreases to 15% at night, but the threat of storms remains the primary concern.
Outlook for Thursday, September 25): The unstable weather pattern is set to continue. The forecast again predicts heavy thunderstorms with a 75% chance of rain during the day. There will be little respite from the humidity as highs stay around 32°C and lows are close to 27°C.
For those planning outdoor activities, a significant weather system affecting the eastern region is indicated by these consecutive days of severe weather.
How Does Kolkata’s Weather Compare to Other Major Cities?
While Kolkata expects a lot of rain, the weather in other big Indian cities varies a lot.
North India: The national capital, Delhi, is expecting a completely dry and sunny day with a high of 36°C.
West India: In Mumbai, conditions will be partly cloudy with a relatively lower high of 28°C. There is a slight 20-25% chance of rain.
South India: Chennai will see cloudy skies with a 20% chance of rain and a high of 33°C. Bengaluru is forecast to have light rain with cooler temperatures, reaching a high of 26°C. The forecast for Hyderabad is for a cloudy day with a 10% chance of precipitation.
This national outlook highlights that the severe thunderstorm activity is particularly concentrated in the eastern part of the country, with Kolkata being the most affected metro.
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Note: Given the high probability of heavy thunderstorms, residents in Kolkata are advised to take necessary precautions. It’s critical to keep abreast of the Indian Meteorological Department’s (IMD) official weather alerts.
