Average annual temperature is 25.0 °C
Absolute maximum temperature: 37.4 °C
Absolute minimum temperature: 11.5 °C
Number of sunny days: 117 days
Number of rainy days: 248 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) | 30.2 | 31.5 | 32.8 | 32.5 | 34.8 | 37.4 | 36.5 | 34.9 | 35.4 | 34.5 | 29.5 | 29.1 |
| Average daytime temperature (°C) | 25.4 | 24.9 | 28.0 | 28.6 | 30.9 | 33.9 | 32.4 | 32.2 | 33.9 | 29.1 | 24.9 | 23.8 |
| Average temperature (°C) | 21.3 | 20.6 | 23.5 | 24.9 | 26.8 | 29.5 | 28.3 | 27.8 | 29.1 | 25.5 | 21.5 | 20.6 |
| Average night temperature (°C) | 18.4 | 17.5 | 20.1 | 22.1 | 23.3 | 25.8 | 24.7 | 24.2 | 25.0 | 22.7 | 19.0 | 17.9 |
| Absolute minimum temperature (°C) | 11.5 | 12.7 | 13.1 | 17.4 | 19.6 | 23.3 | 22.4 | 22.3 | 23.3 | 15.5 | 13.7 | 13.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.2 | 12.8 | 12.3 | 11.7 | 11.2 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.3 | 7.0 | 8.8 | 8.8 | 11.2 | 12.2 | 11.0 | 11.1 | 11.2 | 8.3 | 5.9 | 5.3 |
| Precipitation (mm) | 28 | 46 | 62 | 164 | 60 | 35 | 149 | 122 | 40 | 356 | 138 | 143 |
| Sunny days | 16 | 13 | 16 | 11 | 13 | 13 | 3 | 5 | 4 | 3 | 12 | 8 |
| Rainy days | 15 | 15 | 15 | 19 | 18 | 17 | 28 | 26 | 26 | 28 | 18 | 23 |
| 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