Average annual temperature is 25.8 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: 17.6 °C
Number of sunny days: 37 days
Number of rainy days: 328 days
Look at detailed online map of Thalwattegedera
* Weather data for Thalwattegedera 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) | 30.6 | 32.2 | 34.8 | 36.1 | 33.0 | 31.9 | 31.2 | 33.5 | 31.1 | 32.3 | 31.3 | 31.6 |
| Average daytime temperature (°C) | 29.3 | 30.7 | 32.8 | 33.7 | 30.7 | 30.1 | 29.5 | 31.9 | 28.7 | 29.5 | 30.0 | 29.6 |
| Average temperature (°C) | 24.3 | 25.2 | 26.7 | 27.2 | 26.6 | 26.4 | 26.1 | 27.2 | 25.1 | 25.0 | 24.9 | 25.3 |
| Average night temperature (°C) | 20.2 | 20.8 | 22.5 | 23.1 | 24.2 | 23.9 | 23.5 | 24.0 | 22.9 | 22.5 | 22.3 | 22.5 |
| Absolute minimum temperature (°C) | 17.6 | 17.9 | 21.7 | 21.8 | 22.8 | 22.3 | 21.9 | 22.8 | 21.8 | 21.5 | 21.4 | 21.6 |
| 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 | 12.5 | 12.5 | 12.4 | 12.2 | 12.0 | 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) | 9.6 | 9.7 | 10.2 | 9.8 | 8.9 | 9.8 | 9.2 | 10.8 | 7.8 | 7.6 | 7.3 | 8.2 |
| Precipitation (mm) | 85 | 111 | 113 | 141 | 177 | 121 | 208 | 38 | 300 | 456 | 638 | 300 |
| Sunny days | 15 | 15 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Rainy days | 16 | 13 | 30 | 28 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thalwattegedera is at