Average annual temperature is 26.1 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: 19.2 °C
Number of sunny days: 14 days
Number of rainy days: 351 days
Look at detailed online map of Thalahagama West
* Weather data for Thalahagama West 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) | 31.3 | 33.2 | 32.7 | 33.6 | 32.4 | 31.1 | 30.8 | 31.9 | 31.0 | 31.2 | 31.3 | 31.8 |
| Average daytime temperature (°C) | 30.2 | 30.8 | 31.1 | 31.8 | 30.3 | 30.0 | 29.4 | 30.7 | 28.9 | 29.0 | 29.7 | 29.7 |
| Average temperature (°C) | 25.0 | 25.6 | 26.2 | 26.9 | 27.0 | 26.7 | 26.4 | 27.0 | 25.5 | 25.3 | 25.5 | 25.8 |
| Average night temperature (°C) | 21.1 | 21.8 | 22.6 | 23.3 | 24.5 | 24.3 | 24.0 | 24.1 | 23.4 | 23.1 | 22.9 | 22.9 |
| Absolute minimum temperature (°C) | 19.2 | 20.0 | 20.9 | 21.6 | 22.9 | 22.4 | 22.6 | 22.5 | 22.6 | 22.2 | 21.9 | 21.3 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.4 | 12.3 | 12.2 | 12.0 | 11.8 | 11.8 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.4 | 9.6 | 9.9 | 10.0 | 8.7 | 10.3 | 9.2 | 10.8 | 7.4 | 6.4 | 7.3 | 7.6 |
| Precipitation (mm) | 97 | 139 | 194 | 159 | 175 | 132 | 194 | 116 | 509 | 615 | 519 | 424 |
| Sunny days | 5 | 4 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 3 |
| Rainy days | 26 | 24 | 30 | 30 | 31 | 30 | 31 | 30 | 30 | 31 | 30 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thalahagama West is at