Heavy rainfall is expected in North Bengal districts from August 11 to 13 due to a low-pressure area forming over the Bay of Bengal, prompting the IMD to issue a red alert. While South Bengal will also see rain during this period, it is expected to be light to moderate.
As per the IMD’s bulletin, “… Several North Bengal districts (are) under an orange alert, including Darjeeling, Jalpaiguri, Kalimpong, and Cooch Behar. These districts are expected to receive heavy to very heavy rainfall (7-20 cm) at isolated places from 11 August 2025 at 1 pm until 8:30 am on August 13, except Jalpaiguri, which is under a red alert for tomorrow (August 12). The IMD has also issued a red alert for Alipurduar, valid from Monday to Wednesday. These districts may experience persistent rainfall throughout the week.”
The IMD has advised: “There is a possibility of landslides in the hilly areas of Darjeeling and Kalimpong districts. People should avoid movement in waterlogging-prone and landslide-prone areas.”
In South Bengal, the districts of Birbhum, Murshidabad, and Nadia are likely to experience thunderstorms along with gusty winds at isolated places, and have been placed under a yellow alert. The remaining South Bengal districts, including Kolkata, are likely to receive light to moderate rain at most places during the week.
The local forecast for Kolkata on Monday indicates that the city will experience a hot and humid day, with a generally cloudy sky and the possibility of light rain and thunderstorms in some areas. Temperatures remain on the higher side, with a maximum of 33.6 degrees Celsius and a minimum of 28.4 degrees Celsius. Relative humidity will range from a maximum of 93 percent to a minimum of 64 percent.
On August 11, South Bengal recorded some of the highest daytime temperatures in the state, with Kalaikunda leading at 36.3 degrees Celsius, followed by Salt Lake at 35.7 degrees Celsius, Dumdum at 35.3 degrees Celsius, and Jhargram at 35.0 degrees Celsius. In contrast, North Bengal saw much cooler conditions, with Darjeeling recording the lowest minimum temperature at 16.6 degrees Celsius, followed by Kalimpong at 20.5 degrees Celsius, Cooch Behar at 26.0 degrees Celsius, and Jalpaiguri at 25.7 degrees Celsius.