Chennai weather in October 2025

Expect 32°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Chennai in October based on long-term weather averages. There is usually 9 days with some rainfall and 259 mm of average monthly rainfall in October.

  • 32°C maximum daytime temperature in October in Chennai32
    32°C max day temperature
  • 6 hours of sunshine per day
  • 9 days with some rainfall in October in Chennai9
    9 days with some rainfall
  • 24°C minimum night-time temperature in October in Chennai24
    24°C 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
  • 259 mm monthly rainfall in October in Chennai259
    259 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in October in Chennai11
    11 (Extreme) UV index
  • 29°C sea temperature in October in Chennai29
    29°C 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Chennai in October?

Daytime temperatures usually reach 32°C in Chennai in October with very high heat and humidity, falling to 24°C 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 29°C.

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 259mm.

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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