Average annual temperature is 26.3 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: 18.6 °C
Number of sunny days: 45 days
Number of rainy days: 320 days
Look at detailed online map of Mamunuwa
* Weather data for Mamunuwa 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) | 30.9 | 32.5 | 34.7 | 35.8 | 33.6 | 32.7 | 32.2 | 34.7 | 31.9 | 32.7 | 32.5 | 31.2 |
| Average daytime temperature (°C) | 29.2 | 30.4 | 32.6 | 33.6 | 31.3 | 30.8 | 30.2 | 32.8 | 29.5 | 30.1 | 30.3 | 29.7 |
| Average temperature (°C) | 24.4 | 25.4 | 26.9 | 27.3 | 27.2 | 27.0 | 26.7 | 27.8 | 25.7 | 25.5 | 25.4 | 25.6 |
| Average night temperature (°C) | 20.7 | 21.4 | 23.0 | 23.5 | 24.5 | 24.3 | 24.1 | 24.5 | 23.4 | 22.8 | 22.8 | 23.1 |
| Absolute minimum temperature (°C) | 18.6 | 19.3 | 22.0 | 22.3 | 22.9 | 22.2 | 22.9 | 23.5 | 22.5 | 21.6 | 22.1 | 22.3 |
| 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) | 9.6 | 9.9 | 10.6 | 10.1 | 9.2 | 10.1 | 9.4 | 10.9 | 8.0 | 8.1 | 7.5 | 8.0 |
| Precipitation (mm) | 65 | 72 | 125 | 222 | 160 | 104 | 112 | 20 | 215 | 348 | 593 | 265 |
| Sunny days | 15 | 14 | 2 | 1 | 0 | 0 | 1 | 8 | 1 | 0 | 0 | 3 |
| Rainy days | 16 | 14 | 29 | 29 | 31 | 30 | 30 | 23 | 29 | 31 | 30 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mamunuwa is at