Average annual temperature is 23.4 °C
Absolute maximum temperature: 44.7 °C
Absolute minimum temperature: 0.5 °C
Number of sunny days: 314 days
Number of rainy days: 51 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) | 25.4 | 26.7 | 29.1 | 37.8 | 36.6 | 42.3 | 43.6 | 44.7 | 42.9 | 40.2 | 34.8 | 27.8 |
| Average daytime temperature (°C) | 19.9 | 20.1 | 24.4 | 30.3 | 32.3 | 36.2 | 41.4 | 39.8 | 37.9 | 33.3 | 27.1 | 22.8 |
| Average temperature (°C) | 13.2 | 13.0 | 17.3 | 21.9 | 24.7 | 28.8 | 34.8 | 33.2 | 30.6 | 26.0 | 20.6 | 16.1 |
| Average night temperature (°C) | 7.5 | 7.3 | 11.3 | 14.3 | 16.7 | 20.7 | 28.1 | 27.3 | 23.2 | 19.3 | 14.5 | 10.7 |
| Absolute minimum temperature (°C) | 1.3 | 0.5 | 3.4 | 5.2 | 10.0 | 13.1 | 23.2 | 22.2 | 17.3 | 12.2 | 8.8 | 7.4 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.4 | 11.1 | 12.0 | 12.9 | 13.7 | 14.1 | 13.9 | 13.2 | 12.3 | 11.4 | 10.6 | 10.2 |
| 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) | 8.7 | 9.1 | 10.3 | 12.0 | 12.7 | 12.6 | 12.5 | 11.6 | 11.3 | 10.5 | 9.3 | 8.9 |
| Precipitation (mm) | 8 | 15 | 7 | 0 | 0 | 0 | 2 | 12 | 6 | 1 | 2 | 10 |
| Sunny days | 23 | 20 | 27 | 30 | 30 | 30 | 24 | 20 | 25 | 29 | 28 | 28 |
| Rainy days | 8 | 8 | 4 | 0 | 1 | 0 | 7 | 11 | 5 | 2 | 2 | 3 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at