Average annual temperature is 26.9 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: 19.2 °C
Number of sunny days: 80 days
Number of rainy days: 285 days
Look at detailed online map of Thawalanhalmillewa
* Weather data for Thawalanhalmillewa 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) | 29.3 | 30.9 | 35.1 | 36.7 | 35.5 | 35.5 | 37.3 | 37.9 | 35.0 | 34.0 | 31.3 | 31.4 |
| Average daytime temperature (°C) | 27.8 | 29.2 | 31.8 | 34.1 | 33.0 | 34.4 | 34.6 | 36.0 | 33.6 | 32.0 | 29.5 | 28.7 |
| Average temperature (°C) | 24.0 | 24.7 | 26.4 | 27.7 | 27.9 | 29.2 | 29.1 | 29.1 | 27.8 | 26.2 | 25.1 | 25.2 |
| Average night temperature (°C) | 21.3 | 21.7 | 23.1 | 24.0 | 25.0 | 25.8 | 25.7 | 25.1 | 24.7 | 23.3 | 22.7 | 23.0 |
| Absolute minimum temperature (°C) | 19.2 | 20.1 | 22.4 | 22.5 | 23.2 | 24.7 | 24.8 | 23.9 | 23.6 | 22.6 | 22.1 | 22.4 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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) | 9.2 | 9.9 | 10.6 | 10.5 | 9.0 | 10.7 | 9.5 | 10.7 | 9.5 | 9.1 | 6.9 | 7.4 |
| Precipitation (mm) | 154 | 90 | 46 | 112 | 120 | 15 | 35 | 97 | 99 | 453 | 500 | 321 |
| Sunny days | 12 | 12 | 7 | 8 | 6 | 7 | 9 | 17 | 2 | 0 | 0 | 0 |
| Rainy days | 19 | 16 | 24 | 22 | 25 | 23 | 22 | 14 | 28 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thawalanhalmillewa is at