Average annual temperature is 23.3 °C
Absolute maximum temperature: 41.1 °C
Absolute minimum temperature: 2.5 °C
Number of sunny days: 312 days
Number of rainy days: 53 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) | 30.5 | 34.2 | 35.5 | 35.3 | 36.1 | 41.1 | 38.1 | 39.2 | 37.3 | 34.3 | 30.5 | 26.6 |
| Average daytime temperature (°C) | 25.3 | 26.9 | 31.0 | 31.7 | 33.3 | 38.4 | 34.9 | 35.5 | 34.7 | 27.5 | 23.1 | 22.0 |
| Average temperature (°C) | 16.8 | 18.2 | 22.2 | 24.2 | 26.3 | 31.7 | 28.8 | 29.6 | 28.5 | 21.6 | 16.2 | 15.1 |
| Average night temperature (°C) | 9.3 | 10.6 | 13.6 | 16.4 | 19.0 | 24.2 | 22.4 | 23.0 | 21.6 | 16.5 | 11.0 | 9.1 |
| Absolute minimum temperature (°C) | 3.1 | 2.5 | 2.5 | 11.4 | 14.8 | 19.5 | 19.7 | 20.3 | 19.1 | 8.7 | 3.9 | 3.1 |
| 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) | 10.8 | 11.3 | 12.0 | 12.8 | 13.4 | 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) | 9.6 | 9.9 | 10.9 | 11.0 | 11.2 | 12.5 | 11.8 | 11.9 | 11.5 | 8.0 | 7.8 | 9.1 |
| Precipitation (mm) | 0 | 0 | 3 | 0 | 16 | 4 | 33 | 1 | 2 | 65 | 49 | 1 |
| Sunny days | 31 | 27 | 30 | 28 | 23 | 28 | 23 | 29 | 26 | 17 | 23 | 27 |
| Rainy days | 0 | 1 | 1 | 2 | 8 | 2 | 8 | 2 | 4 | 14 | 7 | 4 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at