Average annual temperature is 16.6 °C
Absolute maximum temperature: 30.2 °C
Absolute minimum temperature: 0.8 °C
Number of sunny days: 126 days
Number of rainy days: 239 days
Look at detailed online map of Siomá
* Weather data for Siomá Guatemala is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 22.6 | 24.9 | 26.6 | 28.6 | 29.7 | 30.2 | 25.5 | 24.3 | 24.3 | 23.1 | 22.7 | 23.1 |
| Average daytime temperature (°C) | 20.6 | 22.3 | 24.3 | 26.3 | 26.6 | 25.1 | 22.5 | 22.5 | 22.0 | 21.2 | 20.2 | 20.0 |
| Average temperature (°C) | 14.1 | 15.0 | 17.1 | 18.3 | 18.8 | 18.7 | 17.3 | 17.1 | 16.9 | 16.5 | 15.4 | 14.4 |
| Average night temperature (°C) | 7.9 | 8.2 | 9.9 | 10.6 | 11.3 | 12.0 | 12.3 | 11.9 | 11.3 | 12.0 | 11.1 | 9.3 |
| Absolute minimum temperature (°C) | 4.0 | 5.1 | 5.3 | 6.7 | 9.1 | 8.4 | 9.8 | 10.1 | 8.9 | 10.0 | 6.8 | 0.8 |
| 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 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.3 | 11.6 | 12.1 | 12.5 | 12.9 | 13.0 | 13.0 | 12.6 | 12.2 | 11.8 | 11.4 | 11.2 |
| 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) | 10.4 | 10.7 | 11.2 | 11.7 | 11.5 | 10.9 | 10.5 | 10.2 | 10.2 | 9.8 | 9.1 | 10.1 |
| Precipitation (mm) | 70 | 39 | 34 | 26 | 58 | 160 | 353 | 174 | 149 | 334 | 285 | 40 |
| Sunny days | 20 | 20 | 17 | 17 | 11 | 6 | 4 | 2 | 0 | 0 | 9 | 20 |
| Rainy days | 11 | 8 | 14 | 13 | 20 | 24 | 27 | 29 | 30 | 31 | 21 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siomá is at