January 2025 has been recognised as the hottest in Mumbai’s recorded history, with the city’s Santacruz observatory reporting an average maximum temperature of 33.2 degrees C, surpassing the previous record of 32.9 degrees C set in January 2009. The normal average maximum temperature for January is 31.2 degrees C.
 
Nights, however, remained relatively cooler, thanks to the easterlies only being active during the daytime. The lowest temperature recorded was 13.7 degrees on January 9. The average minimum temperature for the month stood at 18.5 degrees, slightly higher than the normal 17.3 degrees, indicating that while nights were warmer than usual, they were still more bearable compared to the daytime heat.

Rajesh Kapadia, climatologist