Average annual temperature is 18.8 °C
Absolute maximum temperature: 32.5 °C
Absolute minimum temperature: 4.0 °C
Number of sunny days: 81 days
Number of rainy days: 284 days
Look at detailed online map of San Pedro la Unión
* Weather data for San Pedro la Unión 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) | 25.4 | 26.9 | 30.8 | 32.1 | 30.8 | 32.5 | 26.5 | 29.5 | 26.9 | 28.5 | 26.5 | 26.2 |
| Average daytime temperature (°C) | 21.9 | 22.1 | 25.9 | 28.0 | 27.9 | 28.9 | 25.1 | 25.7 | 25.6 | 24.2 | 21.8 | 20.3 |
| Average temperature (°C) | 15.9 | 16.2 | 18.8 | 20.3 | 20.7 | 21.7 | 19.7 | 19.9 | 19.6 | 19.1 | 17.8 | 15.8 |
| Average night temperature (°C) | 10.9 | 11.4 | 12.7 | 13.5 | 14.4 | 15.5 | 15.7 | 15.3 | 15.2 | 15.3 | 14.7 | 12.3 |
| Absolute minimum temperature (°C) | 7.5 | 9.0 | 10.1 | 9.8 | 12.5 | 13.8 | 14.2 | 14.1 | 13.4 | 12.7 | 10.8 | 4.0 |
| 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) | 11.3 | 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) | 9.5 | 9.5 | 11.0 | 11.2 | 11.3 | 11.3 | 10.3 | 10.6 | 10.2 | 8.9 | 7.3 | 7.9 |
| Precipitation (mm) | 45 | 63 | 45 | 70 | 51 | 155 | 199 | 206 | 163 | 140 | 160 | 110 |
| Sunny days | 15 | 12 | 11 | 14 | 7 | 9 | 1 | 2 | 0 | 0 | 5 | 5 |
| Rainy days | 16 | 16 | 20 | 16 | 24 | 21 | 30 | 29 | 30 | 31 | 25 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Pedro la Unión is at