Average annual temperature is 27.4 °C
Absolute maximum temperature: 42.2 °C
Absolute minimum temperature: 15.0 °C
Number of sunny days: 147 days
Number of rainy days: 218 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 | 36.3 | 38.9 | 40.7 | 40.4 | 42.2 | 37.1 | 35.3 | 36.3 | 34.5 | 34.0 | 32.4 |
| Average daytime temperature (°C) | 29.7 | 31.8 | 35.3 | 37.5 | 37.2 | 37.8 | 34.8 | 33.5 | 33.1 | 32.2 | 29.7 | 28.0 |
| Average temperature (°C) | 24.4 | 25.7 | 28.2 | 30.1 | 30.0 | 30.8 | 28.4 | 28.0 | 27.6 | 27.0 | 25.2 | 23.5 |
| Average night temperature (°C) | 20.5 | 21.2 | 23.0 | 24.5 | 24.4 | 25.5 | 24.5 | 24.2 | 23.9 | 23.3 | 22.0 | 20.3 |
| Absolute minimum temperature (°C) | 15.3 | 15.6 | 20.3 | 21.9 | 19.7 | 22.5 | 23.2 | 23.0 | 22.7 | 19.7 | 20.5 | 15.0 |
| 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) | 11.2 | 11.5 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.0 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.9 | 10.0 | 10.6 | 11.6 | 11.7 | 11.2 | 10.6 | 11.0 | 10.1 | 10.0 | 8.8 | 8.6 |
| Precipitation (mm) | 29 | 9 | 12 | 3 | 32 | 81 | 155 | 134 | 110 | 103 | 116 | 72 |
| Sunny days | 17 | 17 | 21 | 23 | 24 | 12 | 1 | 3 | 5 | 8 | 6 | 10 |
| Rainy days | 14 | 11 | 10 | 7 | 7 | 18 | 30 | 28 | 25 | 23 | 24 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Marcos is at