Average annual temperature is 25.1 °C
Absolute maximum temperature: 39.1 °C
Absolute minimum temperature: 6.2 °C
Number of sunny days: 197 days
Number of rainy days: 168 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) | 31.3 | 33.5 | 36.1 | 32.8 | 33.8 | 38.2 | 36.9 | 39.1 | 38.2 | 35.8 | 31.6 | 28.9 |
| Average daytime temperature (°C) | 26.0 | 25.0 | 28.2 | 28.6 | 31.1 | 35.0 | 35.0 | 36.3 | 36.0 | 31.5 | 24.8 | 23.5 |
| Average temperature (°C) | 20.7 | 19.4 | 23.0 | 23.8 | 26.5 | 29.9 | 30.4 | 30.8 | 30.5 | 26.4 | 20.2 | 19.0 |
| Average night temperature (°C) | 17.1 | 15.9 | 19.6 | 20.4 | 22.9 | 26.3 | 26.7 | 26.8 | 26.6 | 22.6 | 17.0 | 15.8 |
| Absolute minimum temperature (°C) | 6.2 | 6.5 | 9.0 | 14.7 | 19.8 | 22.3 | 24.7 | 24.3 | 24.1 | 10.9 | 10.7 | 8.9 |
| 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 | 13.7 | 13.5 | 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) | 8.2 | 9.0 | 8.4 | 9.1 | 10.5 | 12.4 | 12.2 | 11.7 | 11.2 | 9.0 | 6.0 | 6.2 |
| Precipitation (mm) | 6 | 9 | 37 | 79 | 141 | 16 | 17 | 29 | 26 | 22 | 94 | 59 |
| Sunny days | 22 | 19 | 15 | 12 | 9 | 22 | 19 | 18 | 13 | 13 | 16 | 19 |
| Rainy days | 9 | 9 | 16 | 18 | 22 | 8 | 12 | 13 | 17 | 18 | 14 | 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