Average annual temperature is 28.0 °C
Absolute maximum temperature: 40.2 °C
Absolute minimum temperature: 18.2 °C
Number of sunny days: 121 days
Number of rainy days: 244 days
Look at detailed online map of Chennai
* Weather data for Chennai India is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.2 | 31.7 | 32.9 | 35.9 | 40.2 | 39.7 | 36.2 | 37.0 | 36.1 | 34.5 | 30.3 | 31.0 |
| Average daytime temperature (°C) | 28.0 | 29.7 | 31.0 | 33.2 | 34.6 | 36.5 | 33.5 | 34.7 | 33.5 | 31.8 | 28.6 | 28.1 |
| Average temperature (°C) | 24.8 | 25.2 | 27.3 | 29.2 | 30.1 | 31.4 | 29.5 | 29.7 | 28.9 | 28.1 | 26.2 | 25.7 |
| Average night temperature (°C) | 21.4 | 21.0 | 24.0 | 26.0 | 27.1 | 28.1 | 26.5 | 26.1 | 25.9 | 24.8 | 24.0 | 23.4 |
| Absolute minimum temperature (°C) | 18.2 | 19.4 | 21.3 | 23.8 | 24.1 | 25.6 | 24.5 | 24.3 | 24.6 | 23.1 | 22.5 | 20.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.4 | 12.7 | 12.9 | 12.8 | 12.5 | 12.2 | 11.8 | 11.5 | 11.4 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.0 | 10.4 | 10.9 | 11.0 | 10.3 | 9.8 | 7.0 | 10.5 | 9.7 | 10.4 | 7.6 | 8.8 |
| Precipitation (mm) | 15 | 2 | 39 | 29 | 100 | 55 | 161 | 154 | 176 | 99 | 389 | 401 |
| Sunny days | 17 | 24 | 19 | 15 | 16 | 11 | 6 | 2 | 2 | 1 | 2 | 6 |
| Rainy days | 14 | 4 | 12 | 15 | 15 | 19 | 25 | 29 | 28 | 30 | 28 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Chennai is at