Average annual temperature is 21.7 °C
Absolute maximum temperature: 30.3 °C
Absolute minimum temperature: 12.5 °C
Number of sunny days: 49 days
Number of rainy days: 316 days
Look at detailed online map of Erinwatta
* Weather data for Erinwatta 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) | 24.7 | 25.7 | 29.4 | 30.3 | 27.3 | 27.2 | 27.3 | 28.7 | 26.8 | 26.4 | 26.0 | 26.2 |
| Average daytime temperature (°C) | 23.4 | 24.5 | 26.4 | 27.8 | 25.8 | 25.6 | 25.1 | 27.4 | 25.1 | 24.9 | 24.9 | 24.7 |
| Average temperature (°C) | 19.6 | 20.5 | 21.7 | 22.5 | 22.3 | 22.5 | 22.0 | 22.8 | 21.7 | 21.4 | 21.3 | 21.5 |
| Average night temperature (°C) | 15.8 | 16.3 | 17.8 | 18.2 | 19.5 | 20.3 | 19.7 | 19.2 | 19.3 | 18.6 | 18.5 | 19.0 |
| Absolute minimum temperature (°C) | 12.5 | 13.5 | 16.6 | 16.5 | 18.3 | 19.2 | 18.0 | 17.8 | 17.3 | 17.3 | 16.3 | 16.9 |
| 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) | 9.4 | 9.7 | 9.9 | 10.0 | 9.2 | 10.0 | 9.0 | 10.7 | 8.0 | 7.3 | 7.1 | 7.6 |
| Precipitation (mm) | 55 | 56 | 64 | 133 | 97 | 80 | 120 | 48 | 132 | 375 | 494 | 295 |
| Sunny days | 15 | 9 | 6 | 3 | 1 | 0 | 3 | 6 | 2 | 1 | 1 | 2 |
| Rainy days | 16 | 19 | 25 | 27 | 30 | 30 | 28 | 25 | 28 | 30 | 29 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Erinwatta is at