Average annual temperature is 17.2 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: 2.1 °C
Number of sunny days: 190 days
Number of rainy days: 175 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) | 25.2 | 29.4 | 31.1 | 30.7 | 30.6 | 29.8 | 25.5 | 25.8 | 27.0 | 26.9 | 27.9 | 25.5 |
| Average daytime temperature (°C) | 22.2 | 23.8 | 26.7 | 27.4 | 26.9 | 26.8 | 23.4 | 23.9 | 24.2 | 23.9 | 23.4 | 21.7 |
| Average temperature (°C) | 14.5 | 15.3 | 17.8 | 18.8 | 19.3 | 19.6 | 17.4 | 17.5 | 17.5 | 17.4 | 16.5 | 14.2 |
| Average night temperature (°C) | 8.4 | 9.1 | 11.0 | 12.1 | 13.1 | 13.9 | 12.4 | 12.5 | 12.0 | 12.4 | 11.3 | 8.7 |
| Absolute minimum temperature (°C) | 4.8 | 5.6 | 7.7 | 10.1 | 11.0 | 11.1 | 10.2 | 10.8 | 10.2 | 9.1 | 8.7 | 2.1 |
| 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 | 12.9 | 13.1 | 13.0 | 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) | 10.3 | 10.7 | 11.1 | 11.5 | 11.3 | 11.8 | 11.1 | 10.8 | 10.8 | 10.4 | 10.2 | 9.7 |
| Precipitation (mm) | 0 | 0 | 6 | 16 | 48 | 80 | 129 | 106 | 69 | 57 | 14 | 2 |
| Sunny days | 31 | 27 | 22 | 13 | 14 | 13 | 2 | 4 | 8 | 12 | 19 | 25 |
| Rainy days | 0 | 1 | 9 | 17 | 17 | 17 | 29 | 27 | 22 | 19 | 11 | 6 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at