Average annual temperature is 27.7 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: 18.5 °C
Number of sunny days: 112 days
Number of rainy days: 253 days
Look at detailed online map of Koyitkulam
* Weather data for Koyitkulam 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) | 30.0 | 32.0 | 35.1 | 37.5 | 35.4 | 35.9 | 36.1 | 36.6 | 33.8 | 33.7 | 31.5 | 30.3 |
| Average daytime temperature (°C) | 28.4 | 29.9 | 32.9 | 34.6 | 32.3 | 33.2 | 33.5 | 34.5 | 32.2 | 31.3 | 29.4 | 28.9 |
| Average temperature (°C) | 24.5 | 25.2 | 27.8 | 28.9 | 29.0 | 29.8 | 29.5 | 29.7 | 28.8 | 27.2 | 25.8 | 26.0 |
| Average night temperature (°C) | 21.1 | 21.3 | 23.8 | 24.6 | 26.3 | 27.5 | 26.9 | 26.5 | 26.2 | 24.3 | 23.4 | 23.9 |
| Absolute minimum temperature (°C) | 18.6 | 18.5 | 22.3 | 23.0 | 23.9 | 26.3 | 26.1 | 25.6 | 24.7 | 23.0 | 22.7 | 23.3 |
| 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 | 11.8 | 12.1 | 12.3 | 12.5 | 12.6 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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) | 9.2 | 10.3 | 11.0 | 10.6 | 9.3 | 10.5 | 9.7 | 11.1 | 10.4 | 9.5 | 7.0 | 8.1 |
| Precipitation (mm) | 59 | 94 | 60 | 101 | 99 | 32 | 23 | 18 | 62 | 187 | 386 | 217 |
| Sunny days | 16 | 14 | 5 | 4 | 16 | 13 | 17 | 24 | 2 | 0 | 0 | 1 |
| Rainy days | 15 | 14 | 26 | 26 | 15 | 17 | 14 | 7 | 28 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Koyitkulam is at