Average annual temperature is 23.6 °C
Absolute maximum temperature: 40.8 °C
Absolute minimum temperature: 7.6 °C
Number of sunny days: 308 days
Number of rainy days: 57 days
Look at detailed online map of San Marcos
* Weather data for San Marcos Mexico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.0 | 26.6 | 32.8 | 35.9 | 36.0 | 40.8 | 39.4 | 40.1 | 39.8 | 38.3 | 33.5 | 30.9 |
| Average daytime temperature (°C) | 23.9 | 23.1 | 28.0 | 29.3 | 29.1 | 33.5 | 36.3 | 35.7 | 36.6 | 31.5 | 28.7 | 26.7 |
| Average temperature (°C) | 17.8 | 17.1 | 20.6 | 21.1 | 21.4 | 25.3 | 29.2 | 29.9 | 29.9 | 26.0 | 23.5 | 20.5 |
| Average night temperature (°C) | 12.6 | 12.5 | 14.2 | 14.3 | 15.1 | 18.7 | 24.2 | 25.6 | 24.8 | 21.9 | 19.2 | 15.1 |
| Absolute minimum temperature (°C) | 7.6 | 8.6 | 8.4 | 9.0 | 11.8 | 13.0 | 20.6 | 24.1 | 22.5 | 15.9 | 14.5 | 10.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.8 | 11.4 | 12.0 | 12.7 | 13.3 | 13.6 | 13.4 | 12.9 | 12.3 | 11.6 | 11.0 | 10.7 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.4 | 9.7 | 10.8 | 11.7 | 11.8 | 12.7 | 12.5 | 11.0 | 11.2 | 9.2 | 9.2 | 9.3 |
| Precipitation (mm) | 27 | 13 | 0 | 0 | 0 | 0 | 6 | 43 | 14 | 127 | 14 | 0 |
| Sunny days | 26 | 26 | 30 | 30 | 30 | 30 | 27 | 14 | 22 | 17 | 26 | 30 |
| Rainy days | 5 | 2 | 1 | 0 | 1 | 0 | 4 | 17 | 8 | 14 | 4 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Marcos is at