Average annual temperature is 28.1 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: 18.4 °C
Number of sunny days: 107 days
Number of rainy days: 258 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) | 28.7 | 30.4 | 33.1 | 36.8 | 39.0 | 38.5 | 38.2 | 38.2 | 35.8 | 35.5 | 30.0 | 31.9 |
| Average daytime temperature (°C) | 27.6 | 28.3 | 30.7 | 33.3 | 35.1 | 35.6 | 34.9 | 35.2 | 34.3 | 32.2 | 28.3 | 28.1 |
| Average temperature (°C) | 24.7 | 24.7 | 27.2 | 28.9 | 30.4 | 30.9 | 30.2 | 30.3 | 29.4 | 28.4 | 25.8 | 25.8 |
| Average night temperature (°C) | 21.5 | 20.9 | 23.8 | 25.0 | 26.5 | 27.2 | 26.5 | 26.4 | 26.0 | 24.8 | 23.6 | 23.4 |
| Absolute minimum temperature (°C) | 18.4 | 18.8 | 21.8 | 22.3 | 24.1 | 24.6 | 24.4 | 24.8 | 24.5 | 22.7 | 21.1 | 21.1 |
| 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 | 11.8 | 12.1 | 12.4 | 12.7 | 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) | 9.6 | 10.0 | 11.1 | 11.1 | 9.9 | 9.6 | 7.9 | 10.8 | 10.0 | 10.6 | 7.1 | 8.1 |
| Precipitation (mm) | 18 | 59 | 45 | 45 | 67 | 139 | 63 | 52 | 117 | 174 | 582 | 167 |
| Sunny days | 14 | 18 | 12 | 14 | 19 | 9 | 9 | 8 | 2 | 0 | 0 | 2 |
| Rainy days | 17 | 10 | 19 | 16 | 12 | 21 | 22 | 23 | 28 | 31 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Vallam is at