Average annual temperature is 28.0 °C
Absolute maximum temperature: 40.2 °C
Absolute minimum temperature: 17.0 °C
Number of sunny days: 124 days
Number of rainy days: 241 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 | 34.0 | 36.7 | 39.8 | 39.9 | 40.2 | 37.4 | 38.4 | 35.4 | 35.2 | 31.8 | 31.5 |
| Average daytime temperature (°C) | 29.1 | 32.1 | 34.1 | 36.8 | 36.6 | 36.1 | 34.5 | 35.9 | 33.6 | 33.0 | 29.4 | 29.0 |
| Average temperature (°C) | 23.8 | 25.1 | 27.5 | 29.7 | 30.9 | 31.0 | 29.9 | 30.5 | 28.9 | 28.1 | 25.5 | 25.1 |
| Average night temperature (°C) | 19.5 | 19.4 | 22.6 | 24.4 | 26.4 | 27.4 | 26.5 | 26.2 | 25.5 | 24.1 | 23.0 | 21.9 |
| Absolute minimum temperature (°C) | 17.0 | 17.0 | 19.3 | 21.3 | 23.8 | 24.5 | 24.3 | 24.0 | 24.5 | 22.8 | 21.3 | 19.3 |
| 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) | 10.0 | 10.1 | 10.7 | 11.1 | 10.2 | 9.1 | 7.4 | 10.4 | 9.6 | 10.1 | 6.8 | 8.1 |
| Precipitation (mm) | 10 | 2 | 53 | 29 | 103 | 147 | 81 | 106 | 137 | 124 | 370 | 108 |
| Sunny days | 17 | 24 | 16 | 16 | 14 | 6 | 4 | 10 | 5 | 5 | 2 | 5 |
| Rainy days | 14 | 4 | 15 | 14 | 17 | 24 | 27 | 21 | 25 | 26 | 28 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Vallam is at