Average annual temperature is 24.9 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: 16.7 °C
Number of sunny days: 31 days
Number of rainy days: 334 days
Look at detailed online map of Wewatenna
* Weather data for Wewatenna 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) | 30.3 | 31.3 | 32.9 | 34.1 | 30.7 | 30.0 | 29.5 | 31.2 | 29.5 | 30.2 | 30.8 | 30.8 |
| Average daytime temperature (°C) | 28.3 | 29.4 | 31.2 | 31.7 | 29.0 | 28.3 | 27.9 | 29.7 | 27.5 | 27.9 | 28.6 | 28.8 |
| Average temperature (°C) | 23.5 | 24.3 | 25.7 | 26.0 | 25.6 | 25.2 | 25.1 | 25.9 | 24.2 | 24.2 | 24.2 | 24.7 |
| Average night temperature (°C) | 19.6 | 19.9 | 21.6 | 22.3 | 23.6 | 23.1 | 22.9 | 23.4 | 22.4 | 21.9 | 21.4 | 21.9 |
| Absolute minimum temperature (°C) | 16.7 | 16.8 | 20.1 | 20.5 | 22.5 | 21.9 | 21.4 | 22.2 | 21.5 | 21.0 | 19.4 | 21.0 |
| 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) | 9.4 | 9.6 | 10.1 | 9.7 | 8.7 | 8.8 | 8.7 | 10.6 | 7.0 | 7.1 | 7.1 | 8.0 |
| Precipitation (mm) | 98 | 84 | 117 | 158 | 203 | 229 | 277 | 65 | 338 | 400 | 627 | 316 |
| Sunny days | 15 | 10 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Rainy days | 16 | 18 | 28 | 29 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Wewatenna is at