Average annual temperature is 28.7 °C
Absolute maximum temperature: 40.4 °C
Absolute minimum temperature: 17.3 °C
Number of sunny days: 140 days
Number of rainy days: 225 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) | 33.1 | 36.5 | 38.0 | 40.4 | 40.1 | 40.4 | 39.7 | 40.2 | 37.8 | 37.6 | 33.8 | 33.8 |
| Average daytime temperature (°C) | 31.5 | 33.8 | 35.8 | 37.5 | 37.1 | 38.1 | 35.6 | 38.0 | 35.2 | 34.1 | 31.1 | 31.8 |
| Average temperature (°C) | 25.2 | 26.2 | 28.9 | 30.6 | 30.9 | 31.4 | 29.7 | 31.1 | 29.2 | 28.4 | 26.2 | 26.8 |
| Average night temperature (°C) | 19.6 | 19.6 | 23.0 | 24.6 | 26.1 | 26.7 | 25.6 | 26.0 | 25.4 | 24.1 | 22.5 | 22.5 |
| Absolute minimum temperature (°C) | 17.7 | 17.3 | 18.4 | 22.2 | 24.2 | 25.1 | 24.0 | 24.5 | 24.2 | 22.6 | 19.9 | 20.4 |
| 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) | 11.6 | 11.8 | 12.1 | 12.4 | 12.6 | 12.8 | 12.7 | 12.5 | 12.2 | 11.9 | 11.6 | 11.5 |
| 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 | 10.3 | 11.1 | 10.9 | 10.2 | 9.9 | 8.5 | 10.9 | 9.5 | 10.4 | 8.7 | 8.4 |
| Precipitation (mm) | 4 | 35 | 76 | 35 | 94 | 33 | 56 | 115 | 170 | 140 | 211 | 28 |
| Sunny days | 27 | 24 | 15 | 14 | 12 | 8 | 5 | 14 | 1 | 5 | 2 | 13 |
| Rainy days | 4 | 4 | 16 | 16 | 19 | 22 | 26 | 17 | 29 | 26 | 28 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Vallam is at