Average annual temperature is 26.8 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 15.6 °C
Number of sunny days: 179 days
Number of rainy days: 186 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) | 35.0 | 35.5 | 35.4 | 34.4 | 37.7 | 35.0 | 37.4 | 35.2 | 34.5 | 33.9 | 35.7 | 35.1 |
| Average daytime temperature (°C) | 31.5 | 32.7 | 31.3 | 32.0 | 34.4 | 32.5 | 33.1 | 32.3 | 32.5 | 30.5 | 31.8 | 31.6 |
| Average temperature (°C) | 24.9 | 25.8 | 25.3 | 26.5 | 28.5 | 28.0 | 28.1 | 27.8 | 27.7 | 26.3 | 26.6 | 25.6 |
| Average night temperature (°C) | 19.4 | 20.0 | 20.3 | 21.5 | 23.8 | 24.3 | 24.3 | 24.2 | 24.0 | 23.3 | 22.7 | 21.3 |
| Absolute minimum temperature (°C) | 17.0 | 18.1 | 17.6 | 18.5 | 20.9 | 22.0 | 22.9 | 22.5 | 22.9 | 21.0 | 19.7 | 15.6 |
| 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 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.6 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.1 | 10.7 | 11.2 | 11.6 | 11.6 | 11.1 | 10.4 | 10.3 | 10.5 | 8.0 | 10.0 | 9.1 |
| Precipitation (mm) | 0 | 0 | 11 | 3 | 21 | 139 | 110 | 113 | 92 | 374 | 107 | 7 |
| Sunny days | 29 | 28 | 23 | 24 | 18 | 6 | 2 | 3 | 5 | 3 | 16 | 22 |
| Rainy days | 2 | 0 | 8 | 6 | 13 | 24 | 29 | 28 | 25 | 28 | 14 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at