Average annual temperature is 21.9 °C
Absolute maximum temperature: 44.0 °C
Absolute minimum temperature: 0.0 °C
Number of sunny days: 247 days
Number of rainy days: 117 days
Number of snow days: 1 day
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) | 31.0 | 35.9 | 36.7 | 37.4 | 38.4 | 44.0 | 37.7 | 39.9 | 37.6 | 32.1 | 32.8 | 28.9 |
| Average daytime temperature (°C) | 24.4 | 25.0 | 28.6 | 29.1 | 29.7 | 36.5 | 35.1 | 35.2 | 33.7 | 25.8 | 21.1 | 20.2 |
| Average temperature (°C) | 16.8 | 16.9 | 20.1 | 21.3 | 23.4 | 29.3 | 28.6 | 28.7 | 27.4 | 20.7 | 15.5 | 14.5 |
| Average night temperature (°C) | 11.1 | 10.9 | 13.9 | 15.9 | 18.3 | 22.5 | 22.2 | 22.3 | 21.0 | 17.1 | 11.9 | 10.4 |
| Absolute minimum temperature (°C) | 3.4 | 2.8 | 0.0 | 11.3 | 16.1 | 18.7 | 20.3 | 20.6 | 18.2 | 5.2 | 5.0 | 5.8 |
| 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 | 11.5 | 10.9 | 10.6 |
| 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 | 9.8 | 9.3 | 10.0 | 11.1 | 12.4 | 12.2 | 11.7 | 11.3 | 8.0 | 6.9 | 7.8 |
| Precipitation (mm) | 3 | 1 | 28 | 11 | 39 | 7 | 15 | 10 | 11 | 141 | 80 | 2 |
| Sunny days | 27 | 24 | 24 | 15 | 11 | 21 | 20 | 19 | 22 | 17 | 20 | 27 |
| Rainy days | 4 | 3 | 7 | 15 | 20 | 9 | 11 | 12 | 8 | 14 | 10 | 4 |
| Snow days | 0 | 1 | 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