Average annual temperature is 27.3 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: 20.9 °C
Number of sunny days: 55 days
Number of rainy days: 310 days
Look at detailed online map of Shasthrawela
* Weather data for Shasthrawela 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 | 29.7 | 31.0 | 32.3 | 33.6 | 36.4 | 38.1 | 38.3 | 35.7 | 32.9 | 30.8 | 32.0 |
| Average daytime temperature (°C) | 27.7 | 27.9 | 29.1 | 30.4 | 31.8 | 34.6 | 35.2 | 35.6 | 33.2 | 30.5 | 29.2 | 28.7 |
| Average temperature (°C) | 25.0 | 25.4 | 26.4 | 27.5 | 28.2 | 29.7 | 29.7 | 30.0 | 28.2 | 26.3 | 25.7 | 25.8 |
| Average night temperature (°C) | 22.6 | 23.1 | 23.7 | 25.0 | 25.7 | 26.5 | 26.0 | 26.0 | 25.3 | 23.7 | 23.4 | 23.7 |
| Absolute minimum temperature (°C) | 20.9 | 21.7 | 22.6 | 23.5 | 24.1 | 24.0 | 24.3 | 24.3 | 24.0 | 22.7 | 22.7 | 22.9 |
| 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) | 9.2 | 9.4 | 9.9 | 10.4 | 9.6 | 10.7 | 9.6 | 11.0 | 9.4 | 8.4 | 7.9 | 7.9 |
| Precipitation (mm) | 194 | 183 | 126 | 94 | 83 | 37 | 64 | 42 | 82 | 326 | 473 | 447 |
| Sunny days | 8 | 7 | 6 | 2 | 10 | 5 | 6 | 7 | 2 | 1 | 0 | 1 |
| Rainy days | 23 | 21 | 25 | 28 | 21 | 25 | 25 | 24 | 28 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Shasthrawela is at