Average annual temperature is 26.0 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 48 days
Number of rainy days: 317 days
Look at detailed online map of Halmillawewa
* Weather data for Halmillawewa 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) | 29.6 | 30.7 | 33.5 | 34.7 | 33.2 | 32.4 | 32.6 | 35.6 | 32.3 | 32.1 | 30.8 | 31.0 |
| Average daytime temperature (°C) | 28.0 | 29.0 | 31.2 | 32.8 | 31.0 | 30.8 | 30.3 | 33.3 | 29.9 | 30.0 | 29.6 | 28.7 |
| Average temperature (°C) | 23.8 | 24.6 | 26.2 | 27.1 | 26.9 | 27.0 | 26.6 | 27.9 | 25.8 | 25.3 | 25.1 | 25.0 |
| Average night temperature (°C) | 20.7 | 21.3 | 22.5 | 23.4 | 24.3 | 24.5 | 24.0 | 24.3 | 23.3 | 22.5 | 22.7 | 22.8 |
| Absolute minimum temperature (°C) | 18.7 | 19.4 | 21.9 | 22.2 | 23.1 | 23.2 | 22.5 | 23.5 | 22.4 | 21.2 | 22.1 | 22.2 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 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 | 9.5 | 10.3 | 10.1 | 9.1 | 10.2 | 9.2 | 10.8 | 8.1 | 8.0 | 7.0 | 7.1 |
| Precipitation (mm) | 78 | 83 | 72 | 174 | 153 | 56 | 61 | 22 | 110 | 334 | 443 | 269 |
| Sunny days | 15 | 11 | 2 | 6 | 1 | 1 | 1 | 10 | 0 | 0 | 0 | 1 |
| Rainy days | 16 | 17 | 29 | 24 | 30 | 29 | 30 | 21 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Halmillawewa is at