Chennai weather in December 2025

Expect 29°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Chennai in December based on long-term weather averages. There is usually 6 days with some rainfall and 147 mm of average monthly rainfall in December.

  • 29°C maximum daytime temperature in December in Chennai29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in December in Chennai6
    6 days with some rainfall
  • 21°C minimum night-time temperature in December in Chennai21
    21°C min night temperature
  • 11 hours of daylight per day in December in Chennai11
    11 hours of daylight per day
  • Moderate heat & humidity in December in ChennaiM
    Moderate heat & humidity
  • 147 mm monthly rainfall in December in Chennai147
    147 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in December in Chennai9
    9 (Very High) UV index
  • 27°C sea temperature in December in Chennai27
    27°C sea temperature

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The December 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 December?

Daytime temperatures usually reach 29°C in Chennai in December with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Chennai in December?

There are normally 7 hours of bright sunshine each day in Chennai in December - that's 59% of daylight hours.

How warm is the sea around Chennai in December?

The average sea temperature around Chennai in December is 27°C.

Does it rain in Chennai in December?

There are usually 6 days with some rain in Chennai in December and the average monthly rainfall is 147mm.

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

On average less than 1 day in December in Chennai is likely to be affected by the passage of one or more tropical storms.

Chennai December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:16 17:40
Tuesday, 16th December 2025 06:24 17:46
Wednesday, 31st December 2025 06:31 17:53

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