Average annual temperature is 26.4 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: 18.6 °C
Number of sunny days: 36 days
Number of rainy days: 329 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) | 31.3 | 33.2 | 34.6 | 36.9 | 32.8 | 31.9 | 31.6 | 33.2 | 31.3 | 32.8 | 32.5 | 31.6 |
| Average daytime temperature (°C) | 29.6 | 31.1 | 32.8 | 33.3 | 31.1 | 30.4 | 30.0 | 31.8 | 29.5 | 30.2 | 30.6 | 30.2 |
| Average temperature (°C) | 24.8 | 25.8 | 27.1 | 27.3 | 27.3 | 27.2 | 27.1 | 27.6 | 25.9 | 25.6 | 25.6 | 25.9 |
| Average night temperature (°C) | 20.9 | 21.7 | 23.2 | 23.6 | 24.4 | 24.5 | 24.8 | 24.6 | 23.4 | 22.9 | 22.8 | 23.2 |
| Absolute minimum temperature (°C) | 18.6 | 19.6 | 22.2 | 22.1 | 22.7 | 22.8 | 23.2 | 23.0 | 22.3 | 21.9 | 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) | 9.5 | 9.9 | 10.8 | 10.2 | 9.4 | 10.3 | 9.8 | 11.1 | 8.5 | 8.6 | 7.8 | 8.0 |
| Precipitation (mm) | 88 | 83 | 105 | 172 | 194 | 132 | 120 | 51 | 326 | 384 | 611 | 299 |
| Sunny days | 16 | 13 | 1 | 2 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 2 |
| Rainy days | 15 | 15 | 30 | 28 | 31 | 30 | 30 | 30 | 30 | 31 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Halmillawewa is at