Average annual temperature is 21.9 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: 7.7 °C
Number of sunny days: 130 days
Number of rainy days: 235 days
Look at detailed online map of San Martineros
* Weather data for San Martineros 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) | 32.1 | 32.9 | 33.8 | 34.8 | 34.8 | 35.4 | 32.1 | 32.8 | 33.2 | 32.2 | 29.6 | 32.0 |
| Average daytime temperature (°C) | 27.8 | 28.8 | 31.0 | 32.5 | 32.0 | 32.0 | 28.9 | 30.5 | 30.9 | 29.3 | 26.5 | 27.7 |
| Average temperature (°C) | 19.6 | 20.3 | 22.2 | 23.4 | 23.6 | 23.7 | 22.1 | 23.0 | 22.7 | 21.8 | 20.4 | 20.2 |
| Average night temperature (°C) | 12.7 | 13.0 | 14.9 | 15.6 | 16.9 | 17.6 | 17.0 | 17.2 | 16.9 | 16.7 | 15.8 | 14.1 |
| Absolute minimum temperature (°C) | 7.7 | 10.9 | 13.1 | 13.0 | 15.1 | 15.7 | 15.8 | 16.2 | 16.1 | 14.1 | 12.5 | 8.1 |
| 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) | 10.3 | 10.5 | 10.9 | 11.3 | 11.2 | 11.0 | 10.9 | 10.7 | 10.7 | 10.1 | 9.2 | 10.0 |
| Precipitation (mm) | 16 | 7 | 37 | 23 | 116 | 122 | 159 | 132 | 107 | 118 | 105 | 6 |
| Sunny days | 19 | 20 | 21 | 19 | 8 | 4 | 5 | 0 | 0 | 2 | 12 | 20 |
| Rainy days | 12 | 8 | 10 | 11 | 23 | 26 | 26 | 31 | 30 | 29 | 18 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Martineros is at