Average annual temperature is 27.9 °C
Absolute maximum temperature: 40.5 °C
Absolute minimum temperature: 16.6 °C
Number of sunny days: 119 days
Number of rainy days: 246 days
Look at detailed online map of Vallam
* Weather data for Vallam 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) | 30.3 | 34.5 | 36.5 | 39.6 | 39.8 | 40.5 | 36.8 | 37.5 | 35.1 | 35.1 | 31.5 | 31.7 |
| Average daytime temperature (°C) | 28.9 | 32.2 | 34.4 | 37.2 | 36.8 | 35.9 | 33.8 | 35.8 | 33.4 | 32.7 | 29.4 | 28.7 |
| Average temperature (°C) | 23.6 | 25.3 | 27.5 | 30.1 | 30.8 | 30.7 | 29.3 | 30.2 | 28.7 | 27.9 | 25.4 | 24.8 |
| Average night temperature (°C) | 19.1 | 19.3 | 22.4 | 24.5 | 26.3 | 26.9 | 25.9 | 25.9 | 25.2 | 23.8 | 22.8 | 21.5 |
| Absolute minimum temperature (°C) | 16.6 | 17.0 | 18.6 | 21.5 | 23.6 | 24.6 | 24.1 | 24.3 | 24.2 | 22.2 | 21.4 | 18.8 |
| 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) | 11.5 | 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 | 10.5 | 10.8 | 11.2 | 10.2 | 9.4 | 7.4 | 10.3 | 9.5 | 10.2 | 7.0 | 8.2 |
| Precipitation (mm) | 10 | 1 | 46 | 13 | 111 | 136 | 113 | 115 | 146 | 88 | 325 | 116 |
| Sunny days | 17 | 24 | 14 | 16 | 13 | 9 | 5 | 8 | 3 | 3 | 1 | 6 |
| Rainy days | 14 | 4 | 17 | 14 | 18 | 21 | 26 | 23 | 27 | 28 | 29 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Vallam is at