Average annual temperature is 25.3 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: 17.5 °C
Number of sunny days: 9 days
Number of rainy days: 356 days
Look at detailed online map of Metiwiliya
* Weather data for Metiwiliya 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) | 29.6 | 31.1 | 31.5 | 32.7 | 30.8 | 30.1 | 29.6 | 30.7 | 30.2 | 30.7 | 30.9 | 31.9 |
| Average daytime temperature (°C) | 28.7 | 29.6 | 30.3 | 30.9 | 29.3 | 29.0 | 28.8 | 29.6 | 28.2 | 28.5 | 29.3 | 29.3 |
| Average temperature (°C) | 24.1 | 24.8 | 25.4 | 26.0 | 26.1 | 25.8 | 25.7 | 26.2 | 24.9 | 24.8 | 24.9 | 25.0 |
| Average night temperature (°C) | 20.4 | 21.3 | 22.1 | 22.7 | 23.7 | 23.5 | 23.3 | 23.4 | 22.7 | 22.5 | 22.3 | 22.3 |
| Absolute minimum temperature (°C) | 17.5 | 19.1 | 21.3 | 21.1 | 22.5 | 22.4 | 21.5 | 22.2 | 22.0 | 21.6 | 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 | 12.4 | 12.3 | 12.2 | 12.0 | 11.8 | 11.8 |
| 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) | 9.1 | 9.4 | 9.8 | 9.9 | 8.0 | 9.2 | 9.3 | 10.6 | 6.5 | 6.2 | 6.8 | 7.1 |
| Precipitation (mm) | 193 | 160 | 223 | 212 | 301 | 306 | 337 | 228 | 706 | 652 | 579 | 462 |
| Sunny days | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rainy days | 25 | 25 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Metiwiliya is at