Average annual temperature is 25.8 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 27 days
Number of rainy days: 338 days
Look at detailed online map of Walgammulla
* Weather data for Walgammulla 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) | 31.0 | 34.2 | 33.3 | 34.4 | 32.2 | 30.9 | 30.4 | 31.1 | 30.7 | 31.6 | 31.3 | 32.1 |
| Average daytime temperature (°C) | 29.9 | 31.0 | 31.6 | 32.5 | 30.3 | 29.7 | 29.2 | 30.2 | 28.6 | 29.4 | 29.9 | 30.0 |
| Average temperature (°C) | 25.0 | 25.7 | 26.2 | 26.8 | 26.6 | 26.1 | 26.0 | 26.4 | 25.2 | 25.2 | 25.2 | 25.6 |
| Average night temperature (°C) | 21.2 | 21.5 | 22.7 | 23.2 | 24.3 | 23.7 | 23.4 | 23.6 | 23.2 | 22.8 | 22.6 | 22.8 |
| Absolute minimum temperature (°C) | 18.7 | 19.5 | 21.8 | 21.5 | 22.8 | 22.4 | 21.7 | 22.9 | 22.4 | 21.8 | 21.6 | 21.9 |
| 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 | 9.5 | 9.9 | 9.8 | 8.0 | 7.7 | 8.8 | 10.7 | 6.2 | 6.7 | 6.9 | 7.3 |
| Precipitation (mm) | 139 | 109 | 178 | 207 | 217 | 325 | 300 | 121 | 595 | 596 | 597 | 434 |
| Sunny days | 12 | 10 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| Rainy days | 19 | 18 | 29 | 29 | 31 | 30 | 31 | 31 | 30 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Walgammulla during the most sunny months:
The largest precipitation sum in Walgammulla is at