Calcutta weather in September 2025

Expect 90°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Calcutta in September. Check more long-term weather averages for Calcutta in September before you book your next holiday to India in 2025/2026.

  • 90°F maximum daytime temperature in September in Calcutta90
    90°F max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in September in Calcutta12
    12 days with some rainfall
  • 79°F minimum night-time temperature in September in Calcutta79
    79°F min night temperature
  • 12 hours of daylight per day in September in Calcutta12
    12 hours of daylight per day
  • Very high heat & humidity in September in CalcuttaVH
    Very High heat & humidity
  • 10.7 inches monthly rainfall in September in Calcutta10.7
    10.7 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Calcutta11
    11 (Extreme) UV index

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The September weather guide for India (Calcutta) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Calcutta in September?

Daytime temperatures usually reach 90°F in Calcutta in September with very high heat and humidity, falling to 79°F at night.

How sunny is it in Calcutta in September?

There are normally 4 hours of bright sunshine each day in Calcutta in September - that's 31% of daylight hours.

Does it rain in Calcutta in September?

There are usually 12 days with some rain in Calcutta in September and the average monthly rainfall is 10.7 inches.

What is the chance of a cyclone in Calcutta in September?

On average 2.1 days in September in Calcutta are likely to be affected by the passage of one or more tropical storms.

Calcutta September sunrise & sunset times

Browse the sunrise and sunset times for Calcutta in September 2025. Select a month to view Calcutta sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:19 17:54
Monday, 15th September 2025 05:23 17:40
Tuesday, 30th September 2025 05:28 17:25

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