Average annual temperature is 26.5 °C
Absolute maximum temperature: 37.4 °C
Absolute minimum temperature: 17.7 °C
Number of sunny days: 73 days
Number of rainy days: 292 days
Look at detailed online map of Hirallugama
* Weather data for Hirallugama 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) | 28.9 | 31.0 | 34.6 | 36.0 | 35.2 | 34.7 | 36.3 | 37.4 | 35.2 | 33.7 | 31.7 | 31.5 |
| Average daytime temperature (°C) | 27.8 | 29.3 | 31.9 | 33.9 | 32.3 | 33.5 | 33.6 | 35.2 | 33.0 | 31.8 | 29.6 | 28.6 |
| Average temperature (°C) | 23.6 | 24.4 | 26.2 | 27.3 | 27.5 | 28.6 | 28.5 | 28.6 | 27.5 | 25.8 | 24.8 | 24.9 |
| Average night temperature (°C) | 20.7 | 21.1 | 22.4 | 23.2 | 24.6 | 25.4 | 25.2 | 24.7 | 24.3 | 22.9 | 22.4 | 22.6 |
| Absolute minimum temperature (°C) | 17.7 | 18.9 | 21.7 | 21.6 | 22.9 | 24.2 | 24.4 | 23.6 | 23.3 | 21.9 | 21.7 | 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 | 12.6 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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) | 9.2 | 10.0 | 10.6 | 10.3 | 8.9 | 10.5 | 9.6 | 10.7 | 9.6 | 8.6 | 6.9 | 7.3 |
| Precipitation (mm) | 111 | 90 | 61 | 148 | 134 | 26 | 35 | 107 | 75 | 408 | 551 | 282 |
| Sunny days | 14 | 14 | 3 | 9 | 4 | 8 | 7 | 14 | 0 | 0 | 0 | 0 |
| Rainy days | 17 | 14 | 28 | 21 | 27 | 22 | 24 | 17 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hirallugama is at