Average annual temperature is 24.6 °C
Absolute maximum temperature: 43.8 °C
Absolute minimum temperature: 7.1 °C
Number of sunny days: 225 days
Number of rainy days: 140 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) | 33.3 | 36.8 | 39.2 | 35.5 | 36.9 | 43.8 | 41.6 | 42.3 | 39.9 | 38.3 | 33.6 | 28.8 |
| Average daytime temperature (°C) | 27.4 | 27.6 | 31.7 | 29.8 | 32.6 | 37.5 | 38.1 | 38.1 | 37.4 | 31.5 | 25.4 | 22.9 |
| Average temperature (°C) | 20.2 | 19.6 | 23.3 | 23.3 | 26.1 | 29.7 | 30.4 | 30.3 | 29.7 | 25.2 | 19.7 | 17.9 |
| Average night temperature (°C) | 15.3 | 14.3 | 17.9 | 18.8 | 21.2 | 23.8 | 24.4 | 24.7 | 24.1 | 20.5 | 15.7 | 14.3 |
| Absolute minimum temperature (°C) | 7.1 | 7.1 | 9.2 | 14.4 | 17.0 | 20.8 | 22.0 | 22.1 | 21.9 | 9.5 | 9.8 | 8.8 |
| 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 | 10.7 |
| 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) | 8.6 | 9.5 | 9.2 | 9.2 | 10.8 | 12.4 | 12.4 | 11.3 | 11.1 | 9.0 | 7.0 | 5.8 |
| Precipitation (mm) | 2 | 7 | 43 | 73 | 129 | 49 | 8 | 28 | 44 | 45 | 44 | 58 |
| Sunny days | 26 | 24 | 22 | 9 | 12 | 20 | 19 | 16 | 19 | 18 | 21 | 19 |
| Rainy days | 5 | 4 | 9 | 21 | 19 | 10 | 12 | 15 | 11 | 13 | 9 | 12 |
| 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