Average annual temperature is 26.2 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: 17.6 °C
Number of sunny days: 46 days
Number of rainy days: 319 days
Look at detailed online map of Wellawa
* Weather data for Wellawa 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) | 30.4 | 32.3 | 35.1 | 36.4 | 33.8 | 32.4 | 32.6 | 35.0 | 32.0 | 32.4 | 32.1 | 31.3 |
| Average daytime temperature (°C) | 29.1 | 30.3 | 32.8 | 33.8 | 31.2 | 30.7 | 30.1 | 33.1 | 29.4 | 30.0 | 30.2 | 29.5 |
| Average temperature (°C) | 24.4 | 25.3 | 27.0 | 27.4 | 27.0 | 27.0 | 26.6 | 27.9 | 25.6 | 25.4 | 25.3 | 25.6 |
| Average night temperature (°C) | 20.9 | 20.9 | 22.9 | 23.3 | 24.5 | 24.4 | 24.0 | 24.5 | 23.3 | 22.7 | 22.5 | 23.1 |
| Absolute minimum temperature (°C) | 18.8 | 17.6 | 21.8 | 21.9 | 23.1 | 23.2 | 22.5 | 23.3 | 22.4 | 21.9 | 20.9 | 22.0 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 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) | 9.7 | 9.8 | 10.3 | 9.8 | 8.9 | 10.0 | 9.2 | 10.9 | 8.3 | 7.9 | 7.4 | 8.0 |
| Precipitation (mm) | 62 | 61 | 103 | 155 | 164 | 87 | 121 | 37 | 165 | 362 | 540 | 260 |
| Sunny days | 15 | 13 | 2 | 4 | 1 | 0 | 2 | 5 | 0 | 0 | 0 | 4 |
| Rainy days | 16 | 15 | 29 | 26 | 30 | 30 | 29 | 26 | 30 | 31 | 30 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Wellawa is at