Average annual temperature is 27.8 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 22.5 °C
Number of sunny days: 71 days
Number of rainy days: 294 days
Look at detailed online map of Nilaveli
* Weather data for Nilaveli 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) | 28.5 | 29.7 | 31.6 | 35.9 | 36.6 | 37.5 | 37.7 | 37.2 | 35.3 | 33.5 | 30.0 | 32.3 |
| Average daytime temperature (°C) | 27.2 | 27.8 | 29.5 | 31.8 | 33.6 | 36.0 | 35.3 | 35.7 | 33.8 | 30.7 | 28.6 | 28.4 |
| Average temperature (°C) | 25.5 | 25.9 | 27.1 | 28.4 | 28.7 | 30.4 | 29.9 | 29.4 | 28.3 | 26.8 | 26.2 | 26.3 |
| Average night temperature (°C) | 24.1 | 24.2 | 24.9 | 25.8 | 25.9 | 26.8 | 26.6 | 25.9 | 25.4 | 24.4 | 24.2 | 24.6 |
| Absolute minimum temperature (°C) | 22.5 | 23.3 | 23.1 | 24.3 | 24.1 | 25.7 | 25.8 | 25.1 | 24.5 | 23.5 | 23.6 | 23.5 |
| 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 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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 | 9.9 | 10.8 | 10.4 | 9.3 | 10.6 | 9.5 | 10.8 | 9.6 | 9.8 | 8.0 | 8.4 |
| Precipitation (mm) | 156 | 108 | 56 | 84 | 131 | 18 | 45 | 78 | 195 | 403 | 443 | 377 |
| Sunny days | 11 | 10 | 8 | 8 | 8 | 8 | 5 | 8 | 3 | 2 | 0 | 0 |
| Rainy days | 20 | 18 | 23 | 22 | 23 | 22 | 26 | 23 | 27 | 29 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Nilaveli is at