Average annual temperature is 26.4 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 44 days
Number of rainy days: 321 days
Look at detailed online map of Heelogama
* Weather data for Heelogama 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) | 30.5 | 32.4 | 34.4 | 35.7 | 33.3 | 32.3 | 32.5 | 34.5 | 31.9 | 32.9 | 31.9 | 31.2 |
| Average daytime temperature (°C) | 29.2 | 30.3 | 32.5 | 33.4 | 31.2 | 30.8 | 30.4 | 32.7 | 29.8 | 30.1 | 30.3 | 29.8 |
| Average temperature (°C) | 24.5 | 25.5 | 27.0 | 27.5 | 27.3 | 27.2 | 27.1 | 27.9 | 26.0 | 25.7 | 25.6 | 25.8 |
| Average night temperature (°C) | 21.0 | 21.7 | 23.3 | 24.0 | 24.7 | 24.5 | 24.5 | 24.6 | 23.5 | 23.2 | 23.0 | 23.3 |
| Absolute minimum temperature (°C) | 18.9 | 19.6 | 22.3 | 23.0 | 23.1 | 22.9 | 22.7 | 23.5 | 22.4 | 22.2 | 22.6 | 22.6 |
| 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 | 10.7 | 10.1 | 9.3 | 10.2 | 9.6 | 11.1 | 8.5 | 8.1 | 7.3 | 7.8 |
| Precipitation (mm) | 54 | 64 | 102 | 174 | 167 | 79 | 71 | 26 | 222 | 346 | 531 | 239 |
| Sunny days | 16 | 13 | 3 | 4 | 0 | 0 | 1 | 5 | 0 | 0 | 0 | 2 |
| Rainy days | 15 | 15 | 28 | 26 | 31 | 30 | 30 | 26 | 30 | 31 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Heelogama is at