Average annual temperature is 19.3 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: 0.6 °C
Number of sunny days: 271 days
Number of rainy days: 94 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) | 25.8 | 28.4 | 30.0 | 31.4 | 30.8 | 36.1 | 32.6 | 32.8 | 32.5 | 29.1 | 27.9 | 20.7 |
| Average daytime temperature (°C) | 22.1 | 24.5 | 27.3 | 27.0 | 27.8 | 33.2 | 30.4 | 30.3 | 29.3 | 24.3 | 20.7 | 17.4 |
| Average temperature (°C) | 14.2 | 16.1 | 19.4 | 20.0 | 21.0 | 26.0 | 23.8 | 23.6 | 23.1 | 18.3 | 14.3 | 11.5 |
| Average night temperature (°C) | 6.9 | 8.5 | 11.3 | 13.0 | 14.3 | 18.2 | 17.2 | 17.3 | 16.7 | 13.0 | 9.0 | 6.4 |
| Absolute minimum temperature (°C) | 2.7 | 1.2 | 3.7 | 9.8 | 12.1 | 15.2 | 14.8 | 15.3 | 13.9 | 6.2 | 3.8 | 0.6 |
| 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 | 13.6 | 13.5 | 13.0 | 12.3 | 11.6 | 11.0 | 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) | 9.9 | 10.2 | 11.0 | 11.2 | 11.6 | 12.6 | 12.3 | 11.7 | 11.2 | 9.3 | 8.4 | 8.4 |
| Precipitation (mm) | 1 | 0 | 2 | 13 | 38 | 3 | 13 | 13 | 17 | 67 | 117 | 4 |
| Sunny days | 30 | 28 | 27 | 20 | 14 | 26 | 21 | 20 | 24 | 14 | 18 | 29 |
| Rainy days | 1 | 0 | 4 | 10 | 17 | 4 | 10 | 11 | 6 | 17 | 12 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at