Average annual temperature is 27.7 °C
Absolute maximum temperature: 40.5 °C
Absolute minimum temperature: 17.5 °C
Number of sunny days: 108 days
Number of rainy days: 257 days
Look at detailed online map of Onambākkam
* Weather data for Onambākkam 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) | 30.0 | 32.9 | 34.0 | 37.6 | 40.2 | 40.5 | 36.8 | 37.8 | 35.1 | 34.6 | 31.3 | 32.2 |
| Average daytime temperature (°C) | 28.9 | 30.7 | 32.3 | 34.5 | 36.1 | 36.1 | 33.8 | 35.4 | 33.5 | 32.5 | 29.3 | 29.1 |
| Average temperature (°C) | 24.0 | 24.6 | 27.1 | 29.1 | 30.4 | 30.7 | 29.4 | 29.9 | 28.7 | 27.8 | 25.6 | 25.2 |
| Average night temperature (°C) | 20.1 | 20.1 | 22.9 | 24.9 | 26.4 | 27.0 | 26.3 | 25.8 | 25.4 | 24.1 | 22.9 | 22.0 |
| Absolute minimum temperature (°C) | 17.5 | 18.5 | 20.2 | 21.4 | 24.0 | 24.3 | 24.6 | 24.2 | 24.5 | 22.8 | 21.2 | 19.4 |
| 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) | 11.5 | 11.7 | 12.1 | 12.4 | 12.7 | 12.8 | 12.8 | 12.5 | 12.2 | 11.9 | 11.6 | 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) | 9.8 | 9.9 | 10.9 | 11.1 | 10.1 | 9.4 | 7.3 | 10.2 | 9.7 | 10.2 | 7.4 | 8.2 |
| Precipitation (mm) | 13 | 8 | 58 | 28 | 88 | 115 | 108 | 98 | 168 | 112 | 405 | 178 |
| Sunny days | 15 | 22 | 17 | 16 | 14 | 9 | 4 | 3 | 1 | 3 | 1 | 3 |
| Rainy days | 16 | 6 | 14 | 14 | 17 | 21 | 27 | 28 | 29 | 28 | 29 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Onambākkam is at