Average annual temperature is 25.0 °C
Absolute maximum temperature: 44.3 °C
Absolute minimum temperature: 5.4 °C
Number of sunny days: 204 days
Number of rainy days: 161 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) | 33.2 | 36.8 | 38.6 | 35.3 | 36.9 | 44.3 | 41.1 | 41.2 | 39.8 | 37.9 | 32.4 | 28.3 |
| Average daytime temperature (°C) | 27.4 | 27.1 | 30.6 | 29.7 | 32.9 | 38.0 | 37.8 | 38.4 | 38.2 | 32.0 | 24.9 | 22.7 |
| Average temperature (°C) | 20.6 | 19.7 | 23.3 | 23.8 | 26.5 | 30.4 | 30.8 | 30.9 | 30.4 | 25.8 | 19.7 | 18.3 |
| Average night temperature (°C) | 16.0 | 15.2 | 18.8 | 19.5 | 22.2 | 25.5 | 26.0 | 26.0 | 25.5 | 21.6 | 16.4 | 15.1 |
| Absolute minimum temperature (°C) | 5.4 | 5.4 | 8.4 | 14.1 | 19.5 | 21.6 | 24.2 | 23.4 | 22.8 | 9.8 | 9.5 | 8.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 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) | 10.8 | 11.3 | 12.0 | 12.7 | 13.3 | 13.6 | 13.5 | 13.0 | 12.3 | 11.6 | 11.0 | 10.6 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.2 | 9.7 | 9.0 | 9.0 | 10.4 | 12.1 | 12.3 | 11.3 | 11.2 | 9.0 | 6.5 | 5.8 |
| Precipitation (mm) | 6 | 5 | 50 | 78 | 173 | 26 | 13 | 48 | 47 | 25 | 62 | 47 |
| Sunny days | 22 | 23 | 22 | 10 | 10 | 22 | 13 | 13 | 15 | 12 | 18 | 24 |
| Rainy days | 9 | 5 | 9 | 20 | 21 | 8 | 18 | 18 | 15 | 19 | 12 | 7 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit La Unión during the most sunny months:
The largest precipitation sum in La Unión is at