Average annual temperature is 27.0 °C
Absolute maximum temperature: 40.1 °C
Absolute minimum temperature: 14.9 °C
Number of sunny days: 174 days
Number of rainy days: 191 days
Look at detailed online map of San Luis
* Weather data for San Luis 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) | 36.2 | 37.7 | 39.3 | 39.1 | 38.5 | 40.1 | 34.3 | 37.2 | 36.5 | 38.1 | 35.3 | 37.0 |
| Average daytime temperature (°C) | 31.2 | 32.1 | 35.2 | 36.3 | 36.0 | 36.0 | 33.0 | 34.3 | 34.3 | 33.6 | 29.9 | 30.8 |
| Average temperature (°C) | 24.5 | 24.8 | 27.4 | 28.5 | 28.8 | 29.1 | 27.2 | 28.0 | 28.1 | 27.5 | 25.4 | 24.8 |
| Average night temperature (°C) | 20.0 | 20.1 | 21.7 | 22.4 | 23.4 | 24.0 | 23.6 | 23.9 | 23.7 | 23.5 | 22.4 | 20.9 |
| Absolute minimum temperature (°C) | 14.9 | 17.2 | 20.3 | 19.8 | 21.6 | 21.8 | 22.1 | 22.0 | 22.1 | 20.6 | 20.5 | 15.7 |
| 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 | 13.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.5 | 12.8 | 13.0 | 12.9 | 12.6 | 12.2 | 11.8 | 11.4 | 11.3 |
| 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) | 10.2 | 10.5 | 10.9 | 11.3 | 11.2 | 11.0 | 11.0 | 10.5 | 10.8 | 9.8 | 8.4 | 9.7 |
| Precipitation (mm) | 3 | 10 | 10 | 5 | 58 | 174 | 229 | 99 | 65 | 71 | 121 | 16 |
| Sunny days | 24 | 14 | 20 | 23 | 16 | 8 | 13 | 9 | 8 | 8 | 11 | 20 |
| Rainy days | 7 | 14 | 11 | 7 | 15 | 22 | 18 | 22 | 22 | 23 | 19 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Luis is at