Chennai weather in October 2025

Expect daytime maximum temperatures of 90°F in Chennai, India in October and very high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 10.2 inches of rainfall in the month.

  • 90°F maximum daytime temperature in October in Chennai90
    90°F max day temperature
  • 6 hours of sunshine per day
  • 9 days with some rainfall in October in Chennai9
    9 days with some rainfall
  • 75°F minimum night-time temperature in October in Chennai75
    75°F min night temperature
  • 12 hours of daylight per day in October in Chennai12
    12 hours of daylight per day
  • Very high heat & humidity in October in ChennaiVH
    Very High heat & humidity
  • 10.2 inches monthly rainfall in October in Chennai10.2
    10.2 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in October in Chennai11
    11 (Extreme) UV index
  • 84°F sea temperature in October in Chennai84
    84°F sea temperature

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The October weather guide for India (Chennai) 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 Chennai in October?

Daytime temperatures usually reach 90°F in Chennai in October with very high heat and humidity, falling to 75°F at night.

How sunny is it in Chennai in October?

There are normally 6 hours of bright sunshine each day in Chennai in October - that's 53% of daylight hours.

How warm is the sea around Chennai in October?

The average sea temperature around Chennai in October is 84°F.

Does it rain in Chennai in October?

There are usually 9 days with some rain in Chennai in October and the average monthly rainfall is 10.2 inches.

What is the chance of a cyclone in Chennai in October?

On average 1.3 days in October in Chennai are likely to be affected by the passage of one or more tropical storms.

Chennai October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:58 17:59
Thursday, 16th October 2025 05:59 17:49
Friday, 31st October 2025 06:02 17:43

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