Average annual temperature is 25.6 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: 17.8 °C
Number of sunny days: 32 days
Number of rainy days: 333 days
Look at detailed online map of Iriyaulla
* Weather data for Iriyaulla 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) | 31.5 | 32.8 | 34.5 | 35.2 | 32.3 | 31.0 | 30.4 | 32.7 | 30.3 | 31.2 | 31.4 | 31.3 |
| Average daytime temperature (°C) | 29.2 | 30.4 | 32.1 | 32.9 | 30.1 | 29.5 | 28.9 | 31.1 | 28.2 | 28.8 | 29.4 | 29.4 |
| Average temperature (°C) | 24.1 | 25.0 | 26.3 | 26.7 | 26.3 | 26.0 | 25.8 | 26.9 | 24.9 | 24.7 | 24.7 | 25.2 |
| Average night temperature (°C) | 20.2 | 20.6 | 22.3 | 22.8 | 24.1 | 23.7 | 23.4 | 24.0 | 22.9 | 22.3 | 21.8 | 22.3 |
| Absolute minimum temperature (°C) | 17.8 | 18.2 | 21.3 | 21.0 | 22.8 | 22.2 | 21.9 | 22.8 | 21.9 | 21.4 | 20.1 | 21.5 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.5 | 12.5 | 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 | 9.5 | 10.0 | 9.6 | 8.7 | 9.2 | 8.9 | 10.6 | 7.2 | 7.1 | 7.0 | 7.9 |
| Precipitation (mm) | 89 | 72 | 111 | 119 | 180 | 162 | 243 | 47 | 316 | 412 | 612 | 344 |
| Sunny days | 15 | 11 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 |
| Rainy days | 16 | 17 | 30 | 29 | 31 | 30 | 31 | 31 | 30 | 30 | 30 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iriyaulla is at