Average annual temperature is 27.2 °C
Absolute maximum temperature: 39.7 °C
Absolute minimum temperature: 19.4 °C
Number of sunny days: 36 days
Number of rainy days: 329 days
Look at detailed online map of Aliyarvaddai
* Weather data for Aliyarvaddai 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) | 28.8 | 29.2 | 32.6 | 35.0 | 35.3 | 37.0 | 39.7 | 38.7 | 35.7 | 32.8 | 32.0 | 31.8 |
| Average daytime temperature (°C) | 27.6 | 28.2 | 29.9 | 31.9 | 32.9 | 35.4 | 36.1 | 36.2 | 33.5 | 30.8 | 29.5 | 28.9 |
| Average temperature (°C) | 24.5 | 25.0 | 26.3 | 27.6 | 28.1 | 29.4 | 29.8 | 29.9 | 27.6 | 26.2 | 25.7 | 25.6 |
| Average night temperature (°C) | 21.7 | 22.2 | 23.2 | 24.0 | 24.5 | 25.2 | 25.1 | 25.3 | 24.3 | 23.3 | 23.1 | 23.3 |
| Absolute minimum temperature (°C) | 19.4 | 20.2 | 22.5 | 22.5 | 22.8 | 24.5 | 23.7 | 23.7 | 23.2 | 22.5 | 22.5 | 22.5 |
| 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 | 12.5 | 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) | 9.0 | 9.3 | 9.8 | 10.5 | 9.6 | 10.6 | 9.8 | 11.1 | 9.5 | 9.1 | 7.9 | 7.9 |
| Precipitation (mm) | 196 | 142 | 113 | 75 | 131 | 102 | 62 | 68 | 329 | 477 | 575 | 446 |
| Sunny days | 4 | 6 | 6 | 3 | 6 | 0 | 6 | 3 | 0 | 2 | 0 | 0 |
| Rainy days | 27 | 22 | 25 | 27 | 25 | 30 | 25 | 28 | 30 | 29 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Aliyarvaddai is at