Average annual temperature is 27.9 °C
Absolute maximum temperature: 40.7 °C
Absolute minimum temperature: 17.3 °C
Number of sunny days: 120 days
Number of rainy days: 245 days
Look at detailed online map of Rāyalpattu
* Weather data for Rāyalpattu 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) | 29.7 | 32.7 | 34.1 | 38.2 | 40.2 | 40.7 | 37.4 | 38.2 | 35.3 | 35.0 | 31.5 | 32.1 |
| Average daytime temperature (°C) | 28.6 | 31.0 | 32.4 | 35.1 | 36.0 | 36.5 | 33.9 | 35.6 | 33.7 | 32.6 | 29.3 | 28.9 |
| Average temperature (°C) | 24.2 | 25.0 | 27.2 | 29.4 | 30.4 | 31.1 | 29.5 | 30.0 | 28.9 | 28.0 | 25.7 | 25.3 |
| Average night temperature (°C) | 20.3 | 20.1 | 23.0 | 25.2 | 26.6 | 27.3 | 26.2 | 26.0 | 25.6 | 24.3 | 23.1 | 22.2 |
| Absolute minimum temperature (°C) | 17.3 | 18.2 | 20.0 | 22.3 | 23.7 | 24.0 | 24.3 | 24.2 | 24.4 | 23.1 | 20.7 | 19.7 |
| 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) | 11.5 | 11.7 | 12.1 | 12.4 | 12.7 | 12.9 | 12.8 | 12.5 | 12.2 | 11.8 | 11.5 | 11.4 |
| 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) | 9.9 | 10.2 | 10.9 | 11.1 | 10.3 | 9.7 | 6.9 | 9.9 | 9.5 | 10.3 | 7.5 | 8.3 |
| Precipitation (mm) | 13 | 6 | 66 | 28 | 107 | 108 | 142 | 149 | 202 | 106 | 389 | 273 |
| Sunny days | 16 | 23 | 17 | 13 | 16 | 10 | 5 | 4 | 5 | 5 | 2 | 4 |
| Rainy days | 15 | 5 | 14 | 17 | 15 | 20 | 26 | 27 | 25 | 26 | 28 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rāyalpattu is at