Average annual temperature is 26.3 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: 18.3 °C
Number of sunny days: 60 days
Number of rainy days: 305 days
Look at detailed online map of Gam Sabha Halmilla Wewa
* Weather data for Gam Sabha Halmilla Wewa Sri Lanka is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.4 | 30.9 | 33.9 | 35.3 | 33.6 | 33.5 | 34.3 | 36.1 | 33.9 | 32.3 | 31.5 | 31.0 |
| Average daytime temperature (°C) | 28.0 | 29.0 | 31.3 | 33.2 | 31.4 | 32.0 | 31.7 | 34.4 | 31.3 | 30.6 | 29.9 | 28.7 |
| Average temperature (°C) | 23.8 | 24.7 | 26.4 | 27.5 | 27.2 | 27.7 | 27.4 | 28.5 | 26.6 | 25.7 | 25.3 | 25.1 |
| Average night temperature (°C) | 20.5 | 21.2 | 22.8 | 23.6 | 24.6 | 24.8 | 24.5 | 24.7 | 23.8 | 22.9 | 22.8 | 22.9 |
| Absolute minimum temperature (°C) | 18.3 | 18.8 | 21.7 | 22.3 | 23.3 | 23.4 | 23.4 | 23.9 | 23.0 | 21.7 | 22.0 | 22.2 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 12.2 | 11.9 | 11.8 | 11.7 |
| 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) | 9.1 | 9.6 | 10.4 | 10.2 | 8.9 | 10.6 | 9.6 | 10.9 | 8.9 | 8.0 | 7.0 | 7.4 |
| Precipitation (mm) | 127 | 96 | 87 | 120 | 127 | 34 | 42 | 31 | 70 | 274 | 480 | 264 |
| Sunny days | 14 | 10 | 5 | 6 | 1 | 2 | 6 | 16 | 0 | 0 | 0 | 0 |
| Rainy days | 17 | 18 | 26 | 24 | 30 | 28 | 25 | 15 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Gam Sabha Halmilla Wewa is at