Average annual temperature is 24.8 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: 5.0 °C
Number of sunny days: 172 days
Number of rainy days: 193 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) | 29.4 | 29.6 | 33.5 | 31.5 | 32.6 | 35.2 | 36.1 | 38.5 | 36.6 | 35.3 | 29.7 | 27.3 |
| Average daytime temperature (°C) | 24.8 | 23.7 | 27.0 | 27.7 | 30.3 | 33.5 | 33.9 | 35.3 | 35.1 | 30.4 | 24.2 | 23.3 |
| Average temperature (°C) | 20.4 | 18.8 | 22.6 | 23.5 | 26.3 | 29.5 | 30.0 | 30.5 | 30.3 | 25.9 | 20.1 | 19.0 |
| Average night temperature (°C) | 17.2 | 15.4 | 19.5 | 20.1 | 23.2 | 26.5 | 27.1 | 27.1 | 26.9 | 22.6 | 17.0 | 15.8 |
| Absolute minimum temperature (°C) | 8.6 | 5.0 | 8.4 | 14.3 | 20.7 | 22.4 | 24.0 | 24.0 | 23.5 | 10.1 | 10.7 | 8.0 |
| 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 | 13.4 | 13.7 | 13.6 | 13.0 | 12.3 | 11.6 | 10.9 | 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) | 8.0 | 8.8 | 8.0 | 9.2 | 10.4 | 12.6 | 12.4 | 11.8 | 11.1 | 8.7 | 5.9 | 6.5 |
| Precipitation (mm) | 17 | 12 | 32 | 193 | 117 | 17 | 47 | 48 | 38 | 28 | 94 | 26 |
| Sunny days | 17 | 18 | 13 | 9 | 9 | 22 | 16 | 17 | 11 | 9 | 12 | 19 |
| Rainy days | 14 | 10 | 18 | 21 | 22 | 8 | 15 | 14 | 19 | 22 | 18 | 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