Average annual temperature is 26.8 °C
Absolute maximum temperature: 40.2 °C
Absolute minimum temperature: 14.8 °C
Number of sunny days: 152 days
Number of rainy days: 213 days
Look at detailed online map of San José la Unión
* Weather data for San José 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) | 30.7 | 32.6 | 36.5 | 39.6 | 39.3 | 40.2 | 34.6 | 35.2 | 34.1 | 34.1 | 31.5 | 31.0 |
| Average daytime temperature (°C) | 28.4 | 29.0 | 33.3 | 35.6 | 35.8 | 36.6 | 33.0 | 33.1 | 32.6 | 31.3 | 28.5 | 26.9 |
| Average temperature (°C) | 23.5 | 24.0 | 27.2 | 29.1 | 29.7 | 30.7 | 27.8 | 27.7 | 27.2 | 26.4 | 24.5 | 23.0 |
| Average night temperature (°C) | 19.7 | 20.1 | 22.3 | 23.6 | 24.5 | 25.7 | 23.9 | 23.6 | 23.3 | 23.1 | 21.8 | 20.1 |
| Absolute minimum temperature (°C) | 15.2 | 15.3 | 19.9 | 20.0 | 20.1 | 22.8 | 22.5 | 22.2 | 21.9 | 19.9 | 18.3 | 14.8 |
| 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) | 11.2 | 11.6 | 12.0 | 12.5 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 |
| 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) | 9.7 | 9.7 | 11.0 | 11.4 | 11.6 | 11.4 | 11.0 | 11.2 | 10.7 | 9.7 | 8.0 | 8.0 |
| Precipitation (mm) | 118 | 158 | 31 | 66 | 19 | 126 | 217 | 196 | 225 | 273 | 283 | 191 |
| Sunny days | 16 | 16 | 22 | 22 | 21 | 17 | 7 | 8 | 2 | 5 | 6 | 10 |
| Rainy days | 15 | 12 | 9 | 8 | 10 | 13 | 24 | 23 | 28 | 26 | 24 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San José la Unión is at