Average annual temperature is 20.6 °C
Absolute maximum temperature: 31.9 °C
Absolute minimum temperature: 9.4 °C
Number of sunny days: 20 days
Number of rainy days: 345 days
Look at detailed online map of San Luís
* Weather data for San Luís 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) | 26.5 | 25.6 | 28.0 | 31.9 | 29.5 | 31.7 | 27.3 | 27.5 | 26.7 | 29.0 | 25.8 | 25.8 |
| Average daytime temperature (°C) | 22.3 | 22.3 | 25.0 | 26.9 | 27.2 | 28.3 | 25.1 | 25.7 | 25.5 | 24.7 | 22.4 | 21.6 |
| Average temperature (°C) | 18.2 | 18.4 | 20.4 | 21.5 | 22.4 | 23.4 | 21.2 | 21.6 | 21.2 | 21.0 | 19.7 | 18.3 |
| Average night temperature (°C) | 14.8 | 15.5 | 16.7 | 16.8 | 18.6 | 19.5 | 18.6 | 18.7 | 18.3 | 18.4 | 17.8 | 15.8 |
| Absolute minimum temperature (°C) | 10.7 | 12.2 | 13.6 | 13.9 | 16.6 | 17.9 | 17.4 | 17.7 | 17.4 | 15.2 | 14.0 | 9.4 |
| 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 | 12.8 | 13.0 | 12.9 | 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) | 9.2 | 8.8 | 10.2 | 11.5 | 11.3 | 10.9 | 9.7 | 10.2 | 10.1 | 8.8 | 5.9 | 7.3 |
| Precipitation (mm) | 119 | 129 | 137 | 64 | 115 | 186 | 422 | 241 | 191 | 285 | 715 | 230 |
| Sunny days | 7 | 1 | 2 | 6 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 1 |
| Rainy days | 24 | 27 | 29 | 24 | 31 | 28 | 31 | 31 | 30 | 31 | 29 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Luís is at