Average annual temperature is 22.9 °C
Absolute maximum temperature: 31.7 °C
Absolute minimum temperature: 14.8 °C
Number of sunny days: 60 days
Number of rainy days: 305 days
Look at detailed online map of Hewavissa West
* Weather data for Hewavissa West 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) | 25.4 | 26.3 | 30.4 | 31.6 | 30.1 | 29.6 | 30.1 | 31.7 | 29.4 | 28.5 | 26.6 | 27.6 |
| Average daytime temperature (°C) | 23.7 | 24.8 | 27.0 | 29.1 | 27.7 | 28.4 | 27.4 | 30.2 | 27.3 | 26.1 | 25.7 | 25.1 |
| Average temperature (°C) | 20.3 | 21.2 | 22.7 | 24.0 | 23.6 | 24.4 | 23.6 | 24.4 | 23.0 | 22.5 | 22.3 | 22.2 |
| Average night temperature (°C) | 17.4 | 18.1 | 19.2 | 20.1 | 20.4 | 21.5 | 20.8 | 20.1 | 20.0 | 19.9 | 19.8 | 20.2 |
| Absolute minimum temperature (°C) | 14.8 | 15.5 | 18.1 | 17.9 | 18.5 | 19.6 | 18.1 | 18.2 | 18.0 | 18.4 | 18.8 | 18.9 |
| 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) | 9.3 | 9.6 | 10.0 | 10.2 | 9.3 | 10.3 | 9.3 | 10.8 | 8.6 | 7.7 | 7.4 | 7.7 |
| Precipitation (mm) | 68 | 50 | 78 | 105 | 97 | 28 | 69 | 40 | 73 | 350 | 397 | 243 |
| Sunny days | 15 | 11 | 3 | 2 | 5 | 3 | 7 | 9 | 1 | 2 | 0 | 2 |
| Rainy days | 16 | 17 | 28 | 28 | 26 | 27 | 24 | 22 | 29 | 29 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hewavissa West is at