Written by Nayonika BoseSeptember 20, 2025 10:36 PM IST 2 min readThis came a day after over 61-mm rainfall swept the suburban pockets in a surprise spell on Friday. (file photo)With 10 days still left, the city on Saturday surpassed the monthly average quota of rainfall for September having recorded 393-mm rainfall so far.This came a day after over 61-mm rainfall swept the suburban pockets in a surprise spell on Friday.A climatological analysis from 1991 to 2020 shows the city’s Santacruz station receives an average of 383.5-mm rain during September. However, spurred by heavy showers over the past few weeks, the suburban station has already recorded excess showers, surpassing its monthly average quota for September. Between September 1 and September 20, the Santacruz station has recorded 393-mm rain.The above-normal showers in September follows above-normal rainfall in the month of August, when the suburban station received 1,184-mm rain, which is significantly higher than the monthly average quota of 561-mm rainfall. In June and July, meanwhile, the city had reeled under a deficit from the actual average for the months. While the suburban station received 512-mm rain in June, it received only 798-mm rain in July — which typically receives an average of 920-mm rainfall.Cumulatively, the Santacruz station has logged 2,892-mm rain so far while the Colaba observatory has received 1,910-mm rainfall. IMD data shows even as the suburban station has clocked in excess of 692 mm from the seasonal normals, the Colaba station is languishing under a deficit of 73 mm.On Saturday, meanwhile, after a heavy spell on Friday, rainfall eluded the city even as the IMD extended its yellow alert in the region. While the weather bureau has issued no warnings for Mumbai and its neighbouring districts starting Sunday predicting light rain, thunderstorm activity is expected to continue over the next four days at least.In light of the continued spells over the past week, the total stock in the seven lakes catering to Mumbai’s total water supply nearly touched its full capacity — touching 99.67 per cent or 14.42 lakh million litres on Saturday morning. For perspective, when 100 per cent full, the seven lakes have a capacity of holding 14.47 lakh million litres of water.Stay updated with the latest - Click here to follow us on Instagram© The Indian Express Pvt LtdTags:Mumbai