Average annual temperature is 28.6 °C
Absolute maximum temperature: 41.1 °C
Absolute minimum temperature: 19.5 °C
Number of sunny days: 88 days
Number of rainy days: 277 days
Look at detailed online map of Rettankulam
* Weather data for Rettankulam 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) | 34.6 | 35.2 | 38.3 | 39.1 | 40.6 | 41.1 | 38.6 | 41.0 | 37.3 | 36.4 | 32.7 | 33.0 |
| Average daytime temperature (°C) | 32.0 | 32.3 | 35.0 | 36.3 | 36.6 | 38.3 | 36.1 | 38.3 | 34.5 | 32.8 | 30.3 | 29.7 |
| Average temperature (°C) | 26.0 | 26.2 | 28.8 | 30.0 | 30.6 | 31.5 | 30.1 | 31.2 | 28.6 | 27.5 | 26.0 | 26.1 |
| Average night temperature (°C) | 22.1 | 21.7 | 24.4 | 25.1 | 26.2 | 26.5 | 25.4 | 25.9 | 24.8 | 24.1 | 23.3 | 23.4 |
| Absolute minimum temperature (°C) | 20.8 | 19.5 | 22.7 | 23.4 | 23.8 | 24.7 | 23.5 | 24.3 | 23.8 | 22.7 | 22.7 | 22.7 |
| 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 | 12.6 | 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) | 10.3 | 10.2 | 10.9 | 10.8 | 9.7 | 10.7 | 9.5 | 11.4 | 9.9 | 9.4 | 7.3 | 7.6 |
| Precipitation (mm) | 38 | 66 | 49 | 92 | 57 | 28 | 41 | 44 | 82 | 153 | 292 | 468 |
| Sunny days | 23 | 18 | 4 | 2 | 5 | 5 | 13 | 10 | 3 | 0 | 1 | 4 |
| Rainy days | 8 | 10 | 27 | 28 | 26 | 25 | 18 | 21 | 27 | 31 | 29 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rettankulam is at