Average annual temperature is 24.3 °C
Absolute maximum temperature: 40.0 °C
Absolute minimum temperature: 12.3 °C
Number of sunny days: 88 days
Number of rainy days: 277 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) | 31.3 | 33.0 | 38.2 | 40.0 | 37.9 | 37.9 | 31.5 | 32.9 | 32.1 | 32.9 | 31.0 | 30.3 |
| Average daytime temperature (°C) | 27.4 | 28.0 | 32.0 | 34.3 | 34.1 | 34.6 | 30.1 | 30.8 | 30.5 | 29.4 | 27.0 | 25.4 |
| Average temperature (°C) | 21.5 | 22.0 | 24.7 | 26.6 | 26.8 | 27.7 | 24.6 | 25.0 | 24.7 | 24.2 | 23.0 | 21.0 |
| Average night temperature (°C) | 17.3 | 17.9 | 19.1 | 20.4 | 21.2 | 22.4 | 20.8 | 20.9 | 20.9 | 20.8 | 20.2 | 18.0 |
| Absolute minimum temperature (°C) | 12.6 | 14.0 | 15.9 | 17.6 | 19.1 | 20.0 | 18.2 | 19.4 | 19.9 | 17.2 | 17.5 | 12.3 |
| 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 | 11.1 |
| 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) | 8.8 | 8.9 | 10.3 | 11.0 | 10.8 | 10.9 | 9.6 | 10.3 | 9.9 | 8.6 | 7.0 | 6.9 |
| Precipitation (mm) | 42 | 37 | 44 | 21 | 50 | 141 | 230 | 178 | 107 | 141 | 127 | 80 |
| Sunny days | 15 | 10 | 13 | 15 | 11 | 9 | 1 | 1 | 0 | 1 | 5 | 7 |
| Rainy days | 16 | 18 | 18 | 15 | 20 | 21 | 30 | 30 | 30 | 30 | 25 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Marcos is at