Average annual temperature is 26.6 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 40 days
Number of rainy days: 325 days
Look at detailed online map of Niraliyadda
* Weather data for Niraliyadda 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) | 31.0 | 32.7 | 35.1 | 36.3 | 33.3 | 32.3 | 32.1 | 34.0 | 31.6 | 33.2 | 32.2 | 31.4 |
| Average daytime temperature (°C) | 29.5 | 30.7 | 32.9 | 33.4 | 31.3 | 30.7 | 30.3 | 32.4 | 29.7 | 30.2 | 30.6 | 30.1 |
| Average temperature (°C) | 24.8 | 25.8 | 27.2 | 27.5 | 27.4 | 27.3 | 27.2 | 27.8 | 26.0 | 25.8 | 25.7 | 26.0 |
| Average night temperature (°C) | 21.1 | 21.8 | 23.4 | 23.9 | 24.7 | 24.5 | 24.7 | 24.7 | 23.5 | 23.2 | 23.1 | 23.4 |
| Absolute minimum temperature (°C) | 18.9 | 19.7 | 22.5 | 22.8 | 22.9 | 22.9 | 22.9 | 23.3 | 22.4 | 22.3 | 22.6 | 22.7 |
| 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) | 9.5 | 9.9 | 10.7 | 10.1 | 9.3 | 10.1 | 9.7 | 11.1 | 8.3 | 8.2 | 7.4 | 7.9 |
| Precipitation (mm) | 59 | 58 | 90 | 177 | 188 | 103 | 102 | 37 | 283 | 374 | 574 | 292 |
| Sunny days | 16 | 15 | 2 | 1 | 0 | 0 | 2 | 2 | 0 | 1 | 0 | 1 |
| Rainy days | 15 | 13 | 29 | 29 | 31 | 30 | 29 | 29 | 30 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Niraliyadda is at