Average annual temperature is 22.9 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: 14.7 °C
Number of sunny days: 39 days
Number of rainy days: 326 days
Look at detailed online map of Halminiya
* Weather data for Halminiya 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) | 24.3 | 24.7 | 27.8 | 29.1 | 30.2 | 29.8 | 31.0 | 32.9 | 29.3 | 28.4 | 26.5 | 26.7 |
| Average daytime temperature (°C) | 22.8 | 23.6 | 25.5 | 27.3 | 28.0 | 28.6 | 28.3 | 30.4 | 27.5 | 26.4 | 25.5 | 24.4 |
| Average temperature (°C) | 19.9 | 20.6 | 21.9 | 23.1 | 24.1 | 24.7 | 24.4 | 25.1 | 23.7 | 22.8 | 22.1 | 21.8 |
| Average night temperature (°C) | 17.6 | 17.9 | 19.1 | 19.6 | 21.3 | 22.0 | 21.5 | 21.1 | 21.1 | 20.2 | 19.9 | 20.2 |
| Absolute minimum temperature (°C) | 15.0 | 14.7 | 18.2 | 18.1 | 20.2 | 21.3 | 20.4 | 19.9 | 20.0 | 18.8 | 18.8 | 18.0 |
| 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 | 12.5 | 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) | 8.3 | 8.8 | 9.3 | 10.2 | 9.4 | 10.4 | 9.1 | 10.7 | 8.1 | 7.9 | 7.6 | 6.1 |
| Precipitation (mm) | 248 | 173 | 215 | 140 | 83 | 15 | 43 | 87 | 95 | 505 | 548 | 430 |
| Sunny days | 4 | 4 | 1 | 2 | 6 | 9 | 5 | 8 | 0 | 0 | 0 | 0 |
| Rainy days | 27 | 24 | 30 | 28 | 25 | 21 | 26 | 23 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Halminiya is at