City gets more rain than entire state: Met data
The Statesman | 9 October 2025During June to September, the period that marks the rainy season in south Bengal, Kolkata received 1,659 mm rainfall. According to the weather scientists, an excess rainfall of up to 19 per cent is considered normal in meteorological terms. However, the total rainfall of 1,659 mm recorded in the city from 1 June to 30 September was 23 per cent higher than that of what the city generally gets during the period. Kolkata, therefore, is said to have recorded an excess rainfall this rainy season, according to weather scientists.
On the contrary, the whole of South Bengal region registered 1,264 mm rainfall during the period 1 June to 30 September. “The total rainfall recorded in the region saw a departure of around 8 per cent than the normal during this rainy season,” informed a weather scientist. The amount of rainfall received in the entire West Bengal was also lesser to that of Kolkata. “West Bengal as a whole registered 1353 mm of rainfall. The departure in this case was one per cent. Therefore, West Bengal as a whole, along with the south Bengal region received a near normal seasonal rainfall this year while Kolkata recorded it in excess,” he added.
According to the weather scientists, the overnight record rainfall on 23 September played a crucial role in taking the seasonal rainfall to ‘excess’ from normal. On the intervening night of 22-23 September, the city registered a record rainfall of more than 185 mm within five hours and above 285 mm in 24 hours.
Even in October, the city has recorded a good amount of rainfall in the past eight days. According to the weather office data, between 1 and 8 October, Kolkata received 127 mm of rainfall with a departure of 98 per cent than the normal which again is considered as excess rainfall.
As the time for the monsoon retreat is nearing, the local weather office is anticipating the amount of rainfall in the city to see a reduction. The RMC has tipped light rainfall for the next four days for Kolkata and adjoining districts and further reduction thereafter. Even the presence of a cyclonic circulation over Bangladesh and another brewing over North Bay of Bengal is unlikely to bring any significant rainfall to South Bengal. “The time for monsoon retrieval in Kolkata is around 10 to 15 October. However the exact date of the retrieving monsoons is yet to be confirmed,” pointed out an official.
