Average annual temperature is 17.4 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: 2.8 °C
Number of sunny days: 223 days
Number of rainy days: 142 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) | 22.9 | 26.9 | 28.8 | 28.9 | 29.7 | 32.9 | 29.0 | 26.6 | 29.2 | 27.3 | 26.3 | 20.5 |
| Average daytime temperature (°C) | 20.2 | 22.6 | 25.3 | 26.3 | 27.1 | 30.5 | 25.0 | 24.1 | 26.3 | 22.7 | 21.6 | 16.9 |
| Average temperature (°C) | 13.5 | 15.2 | 18.0 | 18.9 | 20.0 | 23.0 | 18.6 | 17.9 | 19.4 | 16.8 | 15.3 | 11.7 |
| Average night temperature (°C) | 7.5 | 8.5 | 10.6 | 11.6 | 12.9 | 15.2 | 13.2 | 13.1 | 13.4 | 12.0 | 10.4 | 7.8 |
| Absolute minimum temperature (°C) | 5.3 | 3.6 | 7.6 | 8.9 | 10.7 | 13.0 | 11.1 | 11.1 | 11.9 | 9.4 | 6.9 | 2.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.4 | 12.0 | 12.6 | 13.2 | 13.4 | 13.3 | 12.9 | 12.3 | 11.7 | 11.1 | 10.8 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 10.0 | 10.6 | 11.3 | 11.8 | 11.8 | 12.3 | 11.9 | 11.0 | 11.4 | 10.0 | 9.7 | 7.8 |
| Precipitation (mm) | 0 | 0 | 0 | 3 | 5 | 23 | 101 | 106 | 38 | 66 | 60 | 53 |
| Sunny days | 31 | 27 | 29 | 24 | 22 | 25 | 5 | 4 | 13 | 8 | 17 | 18 |
| Rainy days | 0 | 1 | 2 | 6 | 9 | 5 | 26 | 27 | 17 | 23 | 13 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Marcos is at