Average annual temperature is 26.9 °C
Absolute maximum temperature: 39.7 °C
Absolute minimum temperature: 17.9 °C
Number of sunny days: 50 days
Number of rainy days: 315 days
Look at detailed online map of Harasgala
* Weather data for Harasgala 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) | 29.3 | 30.3 | 33.2 | 35.2 | 36.2 | 37.7 | 39.2 | 39.7 | 35.9 | 32.1 | 31.1 | 31.5 |
| Average daytime temperature (°C) | 27.7 | 28.5 | 30.3 | 32.9 | 33.2 | 36.2 | 36.2 | 37.7 | 33.3 | 30.8 | 29.6 | 28.9 |
| Average temperature (°C) | 23.7 | 24.4 | 25.6 | 27.1 | 27.8 | 30.1 | 30.0 | 30.2 | 27.6 | 25.9 | 25.3 | 25.1 |
| Average night temperature (°C) | 20.6 | 21.0 | 22.0 | 22.8 | 23.8 | 25.3 | 25.4 | 24.9 | 23.9 | 22.9 | 22.8 | 22.7 |
| Absolute minimum temperature (°C) | 17.9 | 18.3 | 21.1 | 21.3 | 22.6 | 24.0 | 23.7 | 23.8 | 22.8 | 21.7 | 21.8 | 22.0 |
| 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) | 8.6 | 9.2 | 9.4 | 10.2 | 9.2 | 10.5 | 9.5 | 10.7 | 8.8 | 8.3 | 6.8 | 6.6 |
| Precipitation (mm) | 208 | 142 | 118 | 110 | 127 | 60 | 34 | 86 | 236 | 605 | 516 | 501 |
| Sunny days | 6 | 6 | 6 | 6 | 7 | 3 | 7 | 8 | 0 | 1 | 0 | 0 |
| Rainy days | 25 | 22 | 25 | 24 | 24 | 27 | 24 | 23 | 30 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Harasgala is at