Average annual temperature is 25.5 °C
Absolute maximum temperature: 41.0 °C
Absolute minimum temperature: 11.2 °C
Number of sunny days: 160 days
Number of rainy days: 205 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) | 33.5 | 35.3 | 37.1 | 38.3 | 41.0 | 39.3 | 35.4 | 34.5 | 32.5 | 32.6 | 32.6 | 33.3 |
| Average daytime temperature (°C) | 31.3 | 32.8 | 34.7 | 36.4 | 36.7 | 34.9 | 31.5 | 31.2 | 30.4 | 30.0 | 29.4 | 29.7 |
| Average temperature (°C) | 24.0 | 24.5 | 27.0 | 28.7 | 28.7 | 27.8 | 25.1 | 25.2 | 24.7 | 24.3 | 23.4 | 22.9 |
| Average night temperature (°C) | 18.0 | 17.9 | 20.5 | 21.7 | 22.3 | 22.4 | 20.6 | 20.7 | 20.7 | 20.2 | 19.1 | 17.4 |
| Absolute minimum temperature (°C) | 14.7 | 12.6 | 17.9 | 20.3 | 20.5 | 19.6 | 18.7 | 18.9 | 19.2 | 17.9 | 15.1 | 11.2 |
| 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 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.3 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.7 | 12.2 | 11.8 | 11.4 | 11.2 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.4 | 10.7 | 11.0 | 11.5 | 11.5 | 11.1 | 10.2 | 10.0 | 10.3 | 10.1 | 9.6 | 10.0 |
| Precipitation (mm) | 3 | 2 | 20 | 9 | 62 | 133 | 166 | 164 | 105 | 80 | 26 | 7 |
| Sunny days | 24 | 25 | 17 | 21 | 14 | 9 | 3 | 5 | 4 | 1 | 15 | 22 |
| Rainy days | 7 | 3 | 14 | 9 | 17 | 21 | 28 | 26 | 26 | 30 | 15 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Marcos is at