Average annual temperature is 28.1 °C
Absolute maximum temperature: 40.7 °C
Absolute minimum temperature: 17.6 °C
Number of sunny days: 124 days
Number of rainy days: 241 days
Look at detailed online map of Siyyālam
* Weather data for Siyyālam 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) | 30.1 | 33.7 | 35.2 | 39.2 | 39.9 | 40.7 | 36.9 | 37.2 | 34.8 | 34.8 | 32.5 | 31.7 |
| Average daytime temperature (°C) | 29.1 | 31.6 | 33.5 | 36.1 | 36.7 | 36.1 | 34.1 | 35.5 | 33.4 | 32.7 | 29.4 | 29.0 |
| Average temperature (°C) | 24.1 | 25.1 | 27.5 | 29.6 | 30.9 | 31.0 | 29.7 | 30.3 | 28.9 | 28.1 | 25.8 | 25.4 |
| Average night temperature (°C) | 20.3 | 20.1 | 23.1 | 24.9 | 26.6 | 27.3 | 26.5 | 26.2 | 25.7 | 24.4 | 23.3 | 22.3 |
| Absolute minimum temperature (°C) | 17.6 | 17.7 | 20.1 | 21.6 | 23.8 | 24.5 | 24.6 | 24.6 | 24.6 | 23.3 | 21.2 | 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 | 12.8 | 12.8 | 12.5 | 12.2 | 11.9 | 11.6 | 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 | 10.8 | 11.2 | 10.1 | 9.3 | 7.3 | 10.3 | 9.7 | 10.1 | 7.1 | 8.2 |
| Precipitation (mm) | 11 | 7 | 53 | 19 | 104 | 102 | 89 | 91 | 158 | 112 | 338 | 125 |
| Sunny days | 15 | 23 | 17 | 20 | 12 | 9 | 9 | 7 | 2 | 2 | 2 | 6 |
| Rainy days | 16 | 5 | 14 | 10 | 19 | 21 | 22 | 24 | 28 | 29 | 28 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siyyālam is at