Average annual temperature is 24.2 °C
Absolute maximum temperature: 44.7 °C
Absolute minimum temperature: 3.0 °C
Number of sunny days: 276 days
Number of rainy days: 89 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) | 32.2 | 36.2 | 38.2 | 40.0 | 40.4 | 44.7 | 41.5 | 42.3 | 40.8 | 36.3 | 34.6 | 29.7 |
| Average daytime temperature (°C) | 24.7 | 25.6 | 31.0 | 31.9 | 33.2 | 40.2 | 38.5 | 38.6 | 37.7 | 29.0 | 22.4 | 21.9 |
| Average temperature (°C) | 16.6 | 16.9 | 21.8 | 23.8 | 26.3 | 33.3 | 32.5 | 32.6 | 31.5 | 23.2 | 16.4 | 15.2 |
| Average night temperature (°C) | 9.7 | 10.5 | 14.9 | 17.7 | 20.4 | 26.3 | 26.7 | 26.4 | 25.3 | 18.8 | 12.2 | 9.9 |
| Absolute minimum temperature (°C) | 3.8 | 3.0 | 4.0 | 13.2 | 17.6 | 21.6 | 23.9 | 21.9 | 21.9 | 6.2 | 5.2 | 3.6 |
| 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) | 10.6 | 11.2 | 12.0 | 12.8 | 13.5 | 13.8 | 13.7 | 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) | 8.9 | 9.2 | 9.3 | 9.9 | 10.7 | 12.5 | 12.1 | 11.8 | 11.3 | 8.0 | 7.1 | 8.2 |
| Precipitation (mm) | 0 | 1 | 17 | 18 | 77 | 2 | 11 | 9 | 7 | 65 | 35 | 14 |
| Sunny days | 30 | 26 | 25 | 22 | 15 | 22 | 22 | 25 | 26 | 15 | 23 | 25 |
| Rainy days | 1 | 2 | 6 | 8 | 16 | 8 | 9 | 6 | 4 | 16 | 7 | 6 |
| 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