Average annual temperature is 15.0 °C
Absolute maximum temperature: 29.9 °C
Absolute minimum temperature: -1.5 °C
Number of sunny days: 125 days
Number of rainy days: 240 days
Look at detailed online map of La Unión
* Weather data for 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) | 23.9 | 26.9 | 28.6 | 29.9 | 29.0 | 29.6 | 25.0 | 28.2 | 26.1 | 25.6 | 27.9 | 20.7 |
| Average daytime temperature (°C) | 18.8 | 20.0 | 22.8 | 23.1 | 23.6 | 25.8 | 22.7 | 22.6 | 24.2 | 19.8 | 18.7 | 15.6 |
| Average temperature (°C) | 12.0 | 12.0 | 15.3 | 16.1 | 16.8 | 19.0 | 16.7 | 16.7 | 17.3 | 14.7 | 12.7 | 10.7 |
| Average night temperature (°C) | 7.5 | 7.0 | 10.1 | 11.7 | 11.9 | 13.4 | 12.4 | 12.5 | 12.0 | 11.1 | 8.8 | 7.6 |
| Absolute minimum temperature (°C) | 0.7 | -1.5 | 1.7 | 7.5 | 9.3 | 11.1 | 10.5 | 10.6 | 10.7 | 5.5 | 3.5 | 3.2 |
| 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 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.2 | 12.8 | 12.3 | 11.7 | 11.2 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.9 | 10.0 | 10.5 | 10.7 | 11.5 | 12.4 | 11.9 | 11.0 | 11.3 | 8.9 | 8.1 | 6.6 |
| Precipitation (mm) | 8 | 18 | 28 | 97 | 106 | 47 | 74 | 62 | 18 | 91 | 26 | 69 |
| Sunny days | 18 | 18 | 18 | 8 | 1 | 12 | 4 | 2 | 12 | 7 | 16 | 9 |
| Rainy days | 13 | 10 | 13 | 22 | 30 | 18 | 27 | 29 | 18 | 24 | 14 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at