Average annual temperature is 25.1 °C
Absolute maximum temperature: 46.8 °C
Absolute minimum temperature: 4.0 °C
Number of sunny days: 253 days
Number of rainy days: 112 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 | 37.5 | 40.0 | 38.6 | 37.8 | 46.8 | 43.3 | 44.5 | 42.0 | 37.8 | 32.0 | 29.2 |
| Average daytime temperature (°C) | 26.1 | 27.7 | 31.9 | 30.3 | 32.4 | 39.6 | 39.7 | 39.7 | 38.3 | 30.5 | 23.3 | 22.7 |
| Average temperature (°C) | 19.2 | 19.5 | 23.5 | 23.8 | 26.4 | 32.0 | 32.3 | 32.5 | 31.6 | 24.6 | 18.6 | 17.2 |
| Average night temperature (°C) | 13.7 | 13.3 | 17.9 | 19.0 | 21.8 | 25.7 | 26.6 | 26.8 | 26.1 | 20.3 | 14.9 | 13.0 |
| Absolute minimum temperature (°C) | 6.0 | 4.0 | 7.3 | 14.4 | 18.9 | 20.2 | 24.9 | 24.4 | 23.1 | 8.9 | 8.3 | 5.5 |
| 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 | 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) | 8.0 | 9.7 | 8.2 | 8.5 | 10.0 | 12.3 | 12.3 | 11.7 | 11.0 | 8.1 | 6.1 | 7.0 |
| Precipitation (mm) | 2 | 2 | 23 | 31 | 147 | 19 | 35 | 24 | 22 | 69 | 132 | 31 |
| Sunny days | 29 | 25 | 22 | 11 | 10 | 22 | 27 | 20 | 26 | 17 | 19 | 25 |
| Rainy days | 2 | 3 | 9 | 19 | 21 | 8 | 4 | 11 | 4 | 14 | 11 | 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