Average annual temperature is 27.4 °C
Absolute maximum temperature: 39.4 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 60 days
Number of rainy days: 305 days
Look at detailed online map of Kusumgama
* Weather data for Kusumgama 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) | 30.0 | 31.3 | 34.2 | 36.6 | 36.6 | 36.8 | 38.2 | 39.4 | 36.9 | 34.6 | 31.3 | 31.2 |
| Average daytime temperature (°C) | 28.3 | 29.3 | 31.2 | 33.8 | 33.7 | 35.5 | 35.0 | 37.3 | 34.1 | 31.8 | 29.9 | 29.0 |
| Average temperature (°C) | 24.2 | 24.9 | 26.4 | 28.0 | 28.6 | 30.3 | 29.9 | 30.6 | 28.7 | 26.5 | 25.5 | 25.4 |
| Average night temperature (°C) | 21.0 | 21.7 | 23.0 | 24.2 | 25.4 | 26.9 | 26.5 | 26.3 | 25.3 | 23.4 | 23.1 | 22.9 |
| Absolute minimum temperature (°C) | 18.7 | 19.7 | 22.2 | 22.5 | 23.7 | 26.0 | 25.3 | 24.8 | 23.7 | 22.3 | 22.1 | 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 | 12.5 | 12.4 | 12.2 | 11.9 | 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) | 9.0 | 9.0 | 9.9 | 10.3 | 9.2 | 10.8 | 9.7 | 10.9 | 9.5 | 8.6 | 7.2 | 7.0 |
| Precipitation (mm) | 151 | 127 | 104 | 124 | 134 | 24 | 17 | 49 | 87 | 347 | 537 | 414 |
| Sunny days | 6 | 5 | 6 | 6 | 9 | 7 | 11 | 8 | 2 | 0 | 0 | 0 |
| Rainy days | 25 | 23 | 25 | 24 | 22 | 23 | 20 | 23 | 28 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Kusumgama is at