Average annual temperature is 24.6 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: 12.0 °C
Number of sunny days: 96 days
Number of rainy days: 269 days
Look at detailed online map of Llano de San Marcos
* Weather data for Llano 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) | 34.5 | 34.4 | 35.5 | 37.9 | 37.0 | 38.4 | 31.8 | 33.7 | 33.8 | 31.5 | 30.7 | 33.9 |
| Average daytime temperature (°C) | 30.1 | 30.7 | 33.1 | 34.5 | 34.1 | 32.8 | 30.4 | 31.4 | 31.5 | 29.5 | 28.3 | 29.4 |
| Average temperature (°C) | 23.0 | 23.4 | 25.4 | 26.2 | 26.6 | 25.8 | 24.8 | 25.2 | 24.9 | 24.0 | 23.2 | 23.2 |
| Average night temperature (°C) | 17.6 | 18.3 | 19.0 | 19.5 | 20.6 | 21.1 | 21.0 | 21.2 | 20.7 | 20.3 | 19.6 | 18.6 |
| Absolute minimum temperature (°C) | 12.4 | 15.2 | 16.4 | 16.3 | 19.0 | 19.3 | 19.3 | 19.6 | 19.6 | 17.8 | 15.2 | 12.0 |
| 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) | 11.4 | 11.7 | 12.1 | 12.5 | 12.8 | 13.0 | 12.9 | 12.6 | 12.2 | 11.8 | 11.5 | 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 | 10.6 | 11.1 | 11.3 | 10.9 | 10.6 | 10.4 | 9.7 | 10.0 | 9.5 | 9.1 | 9.7 |
| Precipitation (mm) | 11 | 11 | 22 | 43 | 109 | 301 | 245 | 165 | 265 | 235 | 124 | 9 |
| Sunny days | 11 | 11 | 17 | 18 | 8 | 1 | 0 | 1 | 0 | 4 | 7 | 18 |
| Rainy days | 20 | 17 | 14 | 12 | 23 | 29 | 31 | 30 | 30 | 27 | 23 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Llano de San Marcos is at