Average annual temperature is 17.1 °C
Absolute maximum temperature: 23.0 °C
Absolute minimum temperature: 8.8 °C
Number of sunny days: 49 days
Number of rainy days: 316 days
Look at detailed online map of Departamento de San Marcos
* Weather data for Departamento de San Marcos 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) | 20.9 | 23.0 | 22.0 | 21.4 | 22.5 | 21.8 | 22.5 | 22.1 | 22.6 | 21.4 | 21.6 | 22.4 |
| Average daytime temperature (°C) | 19.1 | 20.1 | 19.5 | 20.0 | 20.8 | 20.3 | 20.7 | 20.6 | 20.4 | 20.0 | 20.0 | 19.8 |
| Average temperature (°C) | 15.3 | 16.0 | 16.5 | 17.2 | 18.4 | 18.1 | 17.8 | 17.8 | 17.6 | 17.4 | 17.1 | 16.0 |
| Average night temperature (°C) | 10.9 | 11.7 | 13.1 | 13.2 | 14.9 | 15.1 | 14.2 | 14.1 | 14.1 | 14.2 | 14.0 | 12.1 |
| Absolute minimum temperature (°C) | 9.2 | 9.7 | 10.0 | 10.3 | 13.5 | 11.9 | 12.5 | 12.4 | 12.6 | 12.9 | 11.7 | 8.8 |
| 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 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.3 | 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) | 10.3 | 10.7 | 10.6 | 11.1 | 10.9 | 9.9 | 9.3 | 9.2 | 9.7 | 8.3 | 9.5 | 10.2 |
| Precipitation (mm) | 57 | 13 | 139 | 141 | 239 | 410 | 602 | 346 | 545 | 696 | 253 | 48 |
| Sunny days | 11 | 17 | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 3 | 12 |
| Rainy days | 20 | 11 | 29 | 28 | 31 | 30 | 31 | 29 | 30 | 31 | 27 | 19 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Departamento de San Marcos is at