Average annual temperature is 27.2 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 36 days
Number of rainy days: 329 days
Look at detailed online map of Irakkamam
* Weather data for Irakkamam 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) | 29.5 | 30.2 | 33.2 | 35.5 | 35.6 | 37.7 | 39.0 | 38.8 | 37.0 | 33.7 | 32.1 | 32.6 |
| Average daytime temperature (°C) | 28.2 | 28.7 | 30.4 | 32.4 | 33.5 | 35.9 | 36.0 | 37.1 | 34.3 | 31.4 | 30.2 | 29.3 |
| Average temperature (°C) | 24.4 | 24.9 | 26.2 | 27.5 | 28.2 | 29.5 | 29.5 | 30.2 | 28.3 | 26.4 | 25.8 | 25.6 |
| Average night temperature (°C) | 21.5 | 22.0 | 22.9 | 23.9 | 24.5 | 25.3 | 24.9 | 25.4 | 24.9 | 23.5 | 23.3 | 23.3 |
| Absolute minimum temperature (°C) | 18.7 | 20.1 | 22.1 | 22.8 | 23.1 | 24.5 | 23.7 | 23.7 | 23.3 | 22.9 | 22.7 | 22.4 |
| 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) | 9.0 | 9.2 | 9.8 | 10.4 | 9.5 | 10.7 | 9.5 | 11.1 | 9.4 | 9.0 | 7.9 | 7.3 |
| Precipitation (mm) | 169 | 137 | 135 | 81 | 136 | 71 | 41 | 56 | 175 | 355 | 511 | 467 |
| Sunny days | 6 | 6 | 5 | 4 | 5 | 2 | 4 | 3 | 1 | 0 | 0 | 0 |
| Rainy days | 25 | 22 | 26 | 26 | 26 | 28 | 27 | 28 | 29 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Irakkamam is at