Weather in Chennai
Live weather and 7-day forecast for Chennai, India, followed by what to expect in each month of the year.
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7-day forecast
Forecast data from Open-Meteo
Climate in Chennai: month by month
Averaged over 2023–2025, the warmest month in Chennai is June, with highs around 36 °C (97 °F) and lows around 28 °C (82 °F); the coolest is January, with highs around 28 °C (83 °F) and lows around 22 °C (72 °F).
Chennai gets about 1,647 mm (65 in) of precipitation a year. The wettest month is November (338 mm over about 20 days) and the driest is February (3 mm).
| Month | Avg high | Avg low | Precipitation (mm) | Wet days | Daylight |
|---|---|---|---|---|---|
| January | 28° | 22° | 31 | 6 | 11h 26m |
| February | 31° | 22° | 3 | 1 | 11h 43m |
| March | 32° | 24° | 21 | 3 | 12h 3m |
| April | 34° | 26° | 20 | 4 | 12h 25m |
| May | 35° | 27° | 121 | 13 | 12h 44m |
| June | 36° | 28° | 87 | 12 | 12h 53m |
| July | 34° | 27° | 114 | 19 | 12h 50m |
| August | 34° | 26° | 185 | 21 | 12h 34m |
| September | 34° | 26° | 162 | 20 | 12h 13m |
| October | 31° | 25° | 254 | 22 | 11h 51m |
| November | 29° | 24° | 338 | 20 | 11h 32m |
| December | 28° | 23° | 311 | 14 | 11h 22m |
Averages of daily values from the ERA5 reanalysis for 2023–2025 at Chennai's coordinates (model elevation 12 m), via Open-Meteo (CC BY 4.0). Three recent years are not a 30-year climate normal; reanalysis smooths local extremes and tends to count more light-rain days than a rain gauge would. Daylight is sunrise to sunset on the 15th of each month.
Weather questions for Chennai
What is the hottest month in Chennai?
June, with average highs of 36 °C (97 °F) and lows of 28 °C (82 °F) over 2023–2025. The coolest month is January, averaging 28 °C (83 °F) by day and 22 °C (72 °F) at night.
What is the rainiest month in Chennai?
November, with about 338 mm of precipitation on roughly 20 days. The driest month is February (3 mm), and the yearly total is around 1,647 mm.
When is the weather mildest in Chennai?
No month in Chennai has average highs between 18 °C and 27 °C (64–81 °F). The coolest month, January, averages highs of 28 °C (83 °F).
More about Chennai
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More for Chennai
More for Chennai: local time, sunrise and sunset, moon phases, and the exact time zone.
About this forecast
The live forecast comes from Open-Meteo, which blends models from national weather services and is fetched fresh in your browser on each visit. Times in the hourly outlook are Chennai local time (Asia/Kolkata).