Average annual temperature is 18.5 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: 5.8 °C
Number of sunny days: 200 days
Number of rainy days: 165 days
Look at detailed online map of San Alfonso
* Weather data for San Alfonso 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) | 25.1 | 28.7 | 28.8 | 30.2 | 31.8 | 33.7 | 27.7 | 26.5 | 28.7 | 26.8 | 28.4 | 23.7 |
| Average daytime temperature (°C) | 22.5 | 24.6 | 26.4 | 27.3 | 26.5 | 28.6 | 24.8 | 24.4 | 25.3 | 24.0 | 23.9 | 21.3 |
| Average temperature (°C) | 15.8 | 17.3 | 19.2 | 20.1 | 20.0 | 21.8 | 18.9 | 18.6 | 19.1 | 18.2 | 17.6 | 15.1 |
| Average night temperature (°C) | 9.5 | 10.4 | 12.1 | 13.3 | 13.9 | 15.2 | 13.5 | 13.8 | 13.7 | 13.5 | 12.2 | 9.8 |
| Absolute minimum temperature (°C) | 7.9 | 8.6 | 9.7 | 11.1 | 11.5 | 12.2 | 12.0 | 12.6 | 12.1 | 10.8 | 9.0 | 5.8 |
| 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 | 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 | 13.1 | 12.8 | 12.2 | 11.7 | 11.2 | 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 | 10.0 |
| Sunshine mean duration (h) | 10.3 | 10.7 | 11.2 | 11.4 | 11.4 | 11.9 | 11.4 | 10.8 | 11.1 | 10.1 | 10.0 | 9.4 |
| Precipitation (mm) | 0 | 0 | 3 | 22 | 55 | 57 | 202 | 134 | 72 | 97 | 30 | 5 |
| Sunny days | 30 | 28 | 24 | 19 | 8 | 17 | 6 | 4 | 11 | 13 | 17 | 23 |
| Rainy days | 1 | 0 | 7 | 11 | 23 | 13 | 25 | 27 | 19 | 18 | 13 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Alfonso is at