Average annual temperature is 28.3 °C
Absolute maximum temperature: 42.0 °C
Absolute minimum temperature: 18.4 °C
Number of sunny days: 114 days
Number of rainy days: 251 days
Look at detailed online map of Koyilkulam
* Weather data for Koyilkulam India is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 33.8 | 36.0 | 39.0 | 40.9 | 42.0 | 38.6 | 36.8 | 41.0 | 37.6 | 37.9 | 31.6 | 32.7 |
| Average daytime temperature (°C) | 30.9 | 32.0 | 35.5 | 37.4 | 37.3 | 36.7 | 33.8 | 38.0 | 34.7 | 33.0 | 29.3 | 29.0 |
| Average temperature (°C) | 25.1 | 25.5 | 28.6 | 30.2 | 30.8 | 30.9 | 29.0 | 31.0 | 29.2 | 27.6 | 25.6 | 25.5 |
| Average night temperature (°C) | 20.9 | 20.3 | 23.3 | 24.7 | 26.1 | 26.6 | 25.4 | 25.5 | 25.3 | 23.8 | 23.1 | 22.7 |
| Absolute minimum temperature (°C) | 19.1 | 18.4 | 20.5 | 22.4 | 23.9 | 25.1 | 23.8 | 23.6 | 23.8 | 22.0 | 22.2 | 21.3 |
| 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) | 9.4 | 9.9 | 10.6 | 10.6 | 10.0 | 10.7 | 8.5 | 11.2 | 8.5 | 9.6 | 7.2 | 7.1 |
| Precipitation (mm) | 51 | 65 | 41 | 54 | 51 | 6 | 97 | 36 | 74 | 160 | 352 | 830 |
| Sunny days | 7 | 21 | 6 | 9 | 7 | 22 | 16 | 12 | 6 | 6 | 1 | 1 |
| Rainy days | 24 | 7 | 25 | 21 | 24 | 8 | 15 | 19 | 24 | 25 | 29 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Koyilkulam is at