Average annual temperature is 26.9 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 68 days
Number of rainy days: 297 days
Look at detailed online map of Rajanganaya Yaya 18
* Weather data for Rajanganaya Yaya 18 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) | 29.9 | 32.2 | 34.6 | 36.0 | 33.7 | 33.2 | 35.4 | 37.1 | 32.7 | 32.9 | 31.9 | 30.8 |
| Average daytime temperature (°C) | 28.8 | 30.2 | 32.5 | 33.6 | 31.5 | 31.9 | 32.1 | 34.7 | 31.1 | 30.8 | 30.1 | 29.4 |
| Average temperature (°C) | 24.4 | 25.3 | 27.1 | 27.8 | 27.9 | 28.5 | 28.3 | 29.1 | 27.2 | 26.2 | 25.6 | 25.7 |
| Average night temperature (°C) | 20.8 | 21.3 | 23.3 | 24.1 | 25.1 | 25.9 | 25.7 | 25.6 | 24.4 | 23.5 | 23.1 | 23.3 |
| Absolute minimum temperature (°C) | 18.7 | 19.0 | 21.8 | 22.9 | 22.9 | 24.3 | 24.4 | 24.6 | 23.1 | 22.3 | 22.6 | 22.8 |
| 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 | 11.9 | 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) | 9.1 | 9.9 | 10.8 | 10.4 | 9.1 | 10.6 | 9.5 | 11.2 | 9.4 | 8.5 | 7.4 | 7.9 |
| Precipitation (mm) | 64 | 86 | 83 | 137 | 114 | 34 | 51 | 17 | 125 | 288 | 414 | 235 |
| Sunny days | 15 | 15 | 4 | 3 | 1 | 2 | 6 | 19 | 1 | 1 | 0 | 1 |
| Rainy days | 16 | 13 | 27 | 27 | 30 | 28 | 25 | 12 | 29 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rajanganaya Yaya 18 is at