Average annual temperature is 28.1 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: 19.8 °C
Number of sunny days: 89 days
Number of rainy days: 276 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) | 28.2 | 29.1 | 31.7 | 35.3 | 37.6 | 38.1 | 37.6 | 37.5 | 35.0 | 34.4 | 30.0 | 31.8 |
| Average daytime temperature (°C) | 27.4 | 27.8 | 29.8 | 31.9 | 34.2 | 35.2 | 34.4 | 34.3 | 33.4 | 31.3 | 28.3 | 28.1 |
| Average temperature (°C) | 25.4 | 25.3 | 27.5 | 29.1 | 30.1 | 30.7 | 30.0 | 29.8 | 29.1 | 28.2 | 26.3 | 26.3 |
| Average night temperature (°C) | 23.1 | 22.8 | 25.1 | 26.5 | 26.9 | 27.7 | 27.0 | 26.8 | 26.4 | 25.2 | 24.1 | 24.5 |
| Absolute minimum temperature (°C) | 19.8 | 20.7 | 23.5 | 24.1 | 24.1 | 25.5 | 24.8 | 24.8 | 25.0 | 23.8 | 21.8 | 22.7 |
| 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) | 9.8 | 10.0 | 11.1 | 11.1 | 9.8 | 9.9 | 7.9 | 10.8 | 10.0 | 10.6 | 7.0 | 7.9 |
| Precipitation (mm) | 31 | 73 | 32 | 27 | 62 | 80 | 71 | 91 | 161 | 188 | 578 | 157 |
| Sunny days | 10 | 17 | 11 | 11 | 20 | 8 | 5 | 4 | 0 | 1 | 0 | 2 |
| Rainy days | 21 | 11 | 20 | 19 | 11 | 22 | 26 | 27 | 30 | 30 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Vallam is at