Average annual temperature is 25.8 °C
Absolute maximum temperature: 39.4 °C
Absolute minimum temperature: 14.7 °C
Number of sunny days: 154 days
Number of rainy days: 211 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) | 31.8 | 34.6 | 38.4 | 37.2 | 37.0 | 39.4 | 36.0 | 34.3 | 33.4 | 33.9 | 32.3 | 31.4 |
| Average daytime temperature (°C) | 28.4 | 28.9 | 31.9 | 32.4 | 33.2 | 34.1 | 32.1 | 32.0 | 32.4 | 30.9 | 28.7 | 26.4 |
| Average temperature (°C) | 22.8 | 22.9 | 25.7 | 26.9 | 28.0 | 29.0 | 27.4 | 27.1 | 27.4 | 26.3 | 23.9 | 22.1 |
| Average night temperature (°C) | 18.9 | 18.9 | 21.5 | 22.9 | 23.7 | 25.0 | 23.5 | 23.2 | 23.3 | 22.9 | 20.4 | 19.0 |
| Absolute minimum temperature (°C) | 15.0 | 14.7 | 17.5 | 19.4 | 19.9 | 22.7 | 22.4 | 21.7 | 22.3 | 19.9 | 16.6 | 15.5 |
| 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) | 11.1 | 11.5 | 12.0 | 12.6 | 13.0 | 13.3 | 13.2 | 12.8 | 12.2 | 11.7 | 11.2 | 11.0 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 11.0 | 10.0 |
| Sunshine mean duration (h) | 9.6 | 9.6 | 10.2 | 10.7 | 11.4 | 10.8 | 10.7 | 10.8 | 11.1 | 9.7 | 8.5 | 7.5 |
| Precipitation (mm) | 4 | 5 | 27 | 30 | 80 | 144 | 222 | 262 | 91 | 98 | 29 | 47 |
| Sunny days | 20 | 23 | 21 | 15 | 16 | 12 | 2 | 6 | 2 | 6 | 14 | 17 |
| Rainy days | 11 | 5 | 10 | 15 | 15 | 18 | 29 | 25 | 28 | 25 | 16 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Marcos is at