Average annual temperature is 24.1 °C
Absolute maximum temperature: 42.8 °C
Absolute minimum temperature: 5.1 °C
Number of sunny days: 310 days
Number of rainy days: 55 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) | 28.8 | 29.1 | 33.3 | 35.4 | 38.0 | 40.8 | 38.7 | 39.8 | 42.8 | 39.5 | 36.7 | 32.1 |
| Average daytime temperature (°C) | 23.7 | 24.6 | 28.1 | 31.0 | 32.2 | 35.3 | 36.7 | 36.9 | 37.5 | 33.9 | 31.3 | 28.2 |
| Average temperature (°C) | 15.2 | 16.1 | 19.4 | 21.8 | 24.2 | 28.4 | 31.9 | 31.4 | 31.3 | 27.1 | 23.2 | 18.7 |
| Average night temperature (°C) | 8.6 | 9.8 | 12.3 | 13.3 | 16.4 | 22.0 | 27.7 | 26.6 | 26.0 | 21.8 | 17.1 | 11.2 |
| Absolute minimum temperature (°C) | 5.1 | 6.9 | 5.3 | 9.8 | 12.1 | 16.0 | 24.8 | 23.9 | 22.6 | 15.5 | 12.0 | 7.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.7 | 11.3 | 12.0 | 12.8 | 13.5 | 13.8 | 13.6 | 13.1 | 12.3 | 11.5 | 10.8 | 10.5 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.2 | 9.5 | 10.4 | 11.7 | 11.9 | 12.6 | 12.5 | 11.1 | 11.3 | 9.7 | 9.1 | 9.3 |
| Precipitation (mm) | 1 | 3 | 3 | 0 | 0 | 0 | 11 | 59 | 16 | 38 | 1 | 0 |
| Sunny days | 27 | 23 | 30 | 30 | 31 | 30 | 22 | 15 | 22 | 22 | 27 | 31 |
| Rainy days | 4 | 5 | 1 | 0 | 0 | 0 | 9 | 16 | 8 | 9 | 3 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at