Average annual temperature is 26.4 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: 18.6 °C
Number of sunny days: 50 days
Number of rainy days: 315 days
Look at detailed online map of Halpanwewa
* Weather data for Halpanwewa 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) | 31.0 | 32.2 | 34.5 | 35.4 | 34.0 | 33.2 | 32.7 | 35.0 | 32.3 | 32.9 | 32.2 | 31.1 |
| Average daytime temperature (°C) | 29.2 | 30.3 | 32.5 | 33.6 | 31.5 | 31.2 | 30.5 | 33.2 | 29.9 | 30.3 | 30.4 | 29.7 |
| Average temperature (°C) | 24.4 | 25.4 | 26.9 | 27.4 | 27.2 | 27.2 | 26.9 | 27.9 | 25.9 | 25.6 | 25.6 | 25.7 |
| Average night temperature (°C) | 20.8 | 21.6 | 23.0 | 23.5 | 24.5 | 24.5 | 24.3 | 24.6 | 23.5 | 23.0 | 23.1 | 23.2 |
| Absolute minimum temperature (°C) | 18.6 | 19.7 | 22.1 | 22.4 | 23.0 | 22.8 | 23.0 | 23.5 | 22.7 | 22.2 | 22.6 | 22.7 |
| 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 | 9.8 | 10.5 | 10.0 | 9.0 | 9.9 | 9.4 | 10.9 | 7.9 | 7.9 | 7.4 | 7.9 |
| Precipitation (mm) | 63 | 69 | 103 | 189 | 140 | 69 | 92 | 21 | 171 | 333 | 559 | 256 |
| Sunny days | 15 | 12 | 5 | 2 | 1 | 0 | 3 | 10 | 1 | 0 | 0 | 1 |
| Rainy days | 16 | 16 | 26 | 28 | 30 | 30 | 28 | 21 | 29 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Halpanwewa is at