Average annual temperature is 26.0 °C
Absolute maximum temperature: 39.1 °C
Absolute minimum temperature: 18.4 °C
Number of sunny days: 44 days
Number of rainy days: 321 days
Look at detailed online map of Mellagama
* Weather data for Mellagama 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) | 28.6 | 29.6 | 31.9 | 33.8 | 35.0 | 36.1 | 38.7 | 39.1 | 33.7 | 30.4 | 30.1 | 29.4 |
| Average daytime temperature (°C) | 26.9 | 27.6 | 28.9 | 31.2 | 31.7 | 34.6 | 35.1 | 37.1 | 31.7 | 29.2 | 28.7 | 27.9 |
| Average temperature (°C) | 23.3 | 23.8 | 24.8 | 26.1 | 26.8 | 28.5 | 28.7 | 29.5 | 26.4 | 24.9 | 24.6 | 24.5 |
| Average night temperature (°C) | 20.6 | 20.9 | 21.7 | 22.3 | 23.1 | 23.9 | 23.9 | 24.0 | 23.1 | 22.1 | 22.0 | 22.4 |
| Absolute minimum temperature (°C) | 18.4 | 18.8 | 20.6 | 21.2 | 22.2 | 23.3 | 23.0 | 22.8 | 22.3 | 21.2 | 21.4 | 21.2 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.5 | 12.3 | 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) | 8.8 | 8.6 | 9.1 | 9.9 | 9.2 | 10.4 | 9.7 | 10.7 | 8.8 | 8.1 | 7.2 | 6.9 |
| Precipitation (mm) | 129 | 166 | 136 | 120 | 180 | 110 | 46 | 51 | 324 | 482 | 460 | 477 |
| Sunny days | 9 | 7 | 6 | 4 | 4 | 2 | 5 | 7 | 0 | 0 | 0 | 0 |
| Rainy days | 22 | 21 | 25 | 26 | 27 | 28 | 26 | 24 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mellagama is at