Average annual temperature is 26.2 °C
Absolute maximum temperature: 39.2 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 52 days
Number of rainy days: 313 days
Look at detailed online map of Thampalawela
* Weather data for Thampalawela 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) | 28.9 | 29.9 | 32.4 | 34.3 | 35.4 | 37.6 | 38.7 | 39.2 | 34.4 | 30.5 | 29.9 | 29.2 |
| Average daytime temperature (°C) | 27.2 | 27.8 | 29.2 | 31.6 | 31.9 | 35.2 | 35.1 | 37.1 | 31.9 | 29.3 | 28.7 | 27.8 |
| Average temperature (°C) | 23.6 | 24.0 | 25.0 | 26.4 | 27.0 | 28.9 | 28.7 | 29.6 | 26.6 | 25.0 | 24.6 | 24.5 |
| Average night temperature (°C) | 20.8 | 21.1 | 21.9 | 22.7 | 23.4 | 24.3 | 24.0 | 24.1 | 23.3 | 22.4 | 22.3 | 22.5 |
| Absolute minimum temperature (°C) | 18.7 | 19.0 | 21.0 | 21.5 | 22.6 | 23.3 | 22.8 | 23.1 | 22.6 | 21.2 | 21.4 | 21.4 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.5 | 12.3 | 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) | 9.1 | 8.9 | 9.3 | 10.0 | 9.4 | 10.6 | 9.8 | 11.0 | 9.3 | 8.4 | 7.4 | 7.4 |
| Precipitation (mm) | 88 | 133 | 128 | 135 | 124 | 62 | 53 | 41 | 220 | 353 | 471 | 396 |
| Sunny days | 9 | 6 | 4 | 4 | 8 | 4 | 7 | 9 | 0 | 0 | 0 | 1 |
| Rainy days | 22 | 22 | 27 | 26 | 23 | 26 | 24 | 22 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thampalawela is at