Average annual temperature is 26.1 °C
Absolute maximum temperature: 32.0 °C
Absolute minimum temperature: 18.5 °C
Number of sunny days: 13 days
Number of rainy days: 352 days
Look at detailed online map of Hettimulla
* Weather data for Hettimulla 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) | 29.7 | 31.1 | 30.6 | 32.0 | 30.7 | 30.1 | 29.4 | 30.0 | 29.9 | 30.5 | 30.5 | 30.6 |
| Average daytime temperature (°C) | 28.4 | 28.9 | 29.7 | 30.5 | 29.4 | 29.0 | 28.7 | 29.3 | 28.3 | 28.5 | 29.1 | 29.1 |
| Average temperature (°C) | 24.8 | 25.5 | 26.1 | 26.8 | 27.1 | 26.9 | 26.7 | 27.0 | 25.9 | 25.5 | 25.5 | 25.7 |
| Average night temperature (°C) | 21.5 | 22.5 | 23.2 | 24.0 | 25.1 | 25.0 | 24.8 | 25.0 | 24.0 | 23.3 | 23.1 | 23.3 |
| Absolute minimum temperature (°C) | 18.5 | 21.4 | 21.5 | 22.6 | 24.1 | 23.3 | 23.3 | 23.9 | 23.1 | 22.4 | 22.5 | 22.4 |
| 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 | 11.8 |
| 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) | 9.6 | 9.8 | 10.4 | 10.4 | 8.6 | 9.6 | 9.6 | 10.8 | 7.2 | 7.2 | 7.5 | 7.9 |
| Precipitation (mm) | 119 | 128 | 191 | 171 | 296 | 355 | 256 | 188 | 647 | 619 | 649 | 367 |
| Sunny days | 8 | 3 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| Rainy days | 23 | 25 | 31 | 29 | 31 | 30 | 30 | 31 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hettimulla is at