If humidity made the weather unpleasant in the city over the past two days, on Sunday, it was the beginning of the October heat that raised the discomfort level for Mumbaiites.
At 35.8 degrees Celsius – 4.1 degrees above normal – it was the hottest September day in the last decade, while at Colaba the temperature was 35 degrees Celsius – 3.8 degrees above normal. The month recorded the hottest day with a temperature of 36.4 degrees Celsius on September 23, 1972.
The humidity levels that were in the low 90s on Friday and Saturday dropped a little, making the weather hot and dry. On Sunday, the humidity at Santacruz dropped to 62% from 85%, while at Colaba it decreased from 95% to 87%.
According to the Met department, the rise in temperature and drop in humidity can be attributed to the change in wind pattern. “Before Sunday, the winds were westerly and brought in a lot of moisture. The winds have now turned northerly, marking the start of October heat. But the monsoon has not withdrawn from Mumbai yet. The city can expect thundershowers,” said VK Rajeev, director, India Meteorological Department (IMD), western region.
IMD’s evening weather bulletin on Sunday said that the monsoon’s withdrawal line had passed Porbandar and Vadodara and withdrawal will progress steadily over the next few days. “It will take a few more days for the monsoon to withdraw from the city. The temperature will remain in the mid to high 30s for the next two days,” added Rajeev.