Heavy rain flooded Kolkata on September 23, 2025. This marked the highest September rainfall in 39 years and the sixth-highest in the city’s history. Between the mornings of September 22 and 23, the city saw 251.4 mm of rain. An astonishing 180 mm fell in just three hours. This heavy downpour caused widespread, severe waterlogging, leaving some areas underwater from knee to waist for up to 10 hours
