Average annual temperature is 26.2 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: 18.4 °C
Number of sunny days: 43 days
Number of rainy days: 322 days
Look at detailed online map of Niyandawanaya
* Weather data for Niyandawanaya 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) | 30.1 | 31.5 | 34.0 | 35.2 | 33.8 | 33.0 | 33.2 | 35.5 | 32.5 | 32.5 | 32.2 | 30.4 |
| Average daytime temperature (°C) | 28.7 | 29.7 | 32.1 | 33.3 | 31.4 | 31.3 | 30.7 | 33.7 | 30.1 | 30.3 | 30.1 | 29.1 |
| Average temperature (°C) | 24.1 | 25.0 | 26.6 | 27.2 | 27.0 | 27.2 | 26.9 | 28.1 | 25.9 | 25.5 | 25.3 | 25.3 |
| Average night temperature (°C) | 20.5 | 21.3 | 22.7 | 23.3 | 24.3 | 24.4 | 24.1 | 24.5 | 23.4 | 22.8 | 22.7 | 23.0 |
| Absolute minimum temperature (°C) | 18.4 | 19.1 | 22.0 | 21.9 | 23.0 | 23.1 | 22.7 | 23.5 | 22.5 | 21.2 | 22.1 | 22.2 |
| 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) | 11.7 | 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 | 9.8 | 10.6 | 10.1 | 9.1 | 10.3 | 9.5 | 11.0 | 8.5 | 8.2 | 7.4 | 7.8 |
| Precipitation (mm) | 69 | 86 | 74 | 137 | 141 | 68 | 75 | 19 | 129 | 295 | 493 | 216 |
| Sunny days | 15 | 13 | 2 | 3 | 0 | 0 | 1 | 8 | 0 | 1 | 0 | 0 |
| Rainy days | 16 | 15 | 29 | 27 | 31 | 30 | 30 | 23 | 30 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Niyandawanaya is at