Average annual temperature is 24.3 °C
Absolute maximum temperature: 39.2 °C
Absolute minimum temperature: 7.6 °C
Number of sunny days: 192 days
Number of rainy days: 173 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) | 34.7 | 35.5 | 37.7 | 38.2 | 38.8 | 39.2 | 33.3 | 35.2 | 35.5 | 34.9 | 35.4 | 35.1 |
| Average daytime temperature (°C) | 31.1 | 31.4 | 34.6 | 35.4 | 35.8 | 34.9 | 31.7 | 32.4 | 32.9 | 31.7 | 30.7 | 28.8 |
| Average temperature (°C) | 21.9 | 22.0 | 24.8 | 26.1 | 26.9 | 26.9 | 24.6 | 24.9 | 25.0 | 24.3 | 23.0 | 20.8 |
| Average night temperature (°C) | 14.8 | 14.7 | 17.0 | 18.7 | 19.6 | 20.9 | 19.6 | 19.7 | 19.4 | 19.0 | 17.5 | 14.8 |
| Absolute minimum temperature (°C) | 8.4 | 11.3 | 13.8 | 15.9 | 15.6 | 19.0 | 17.9 | 17.5 | 17.9 | 14.2 | 13.2 | 7.6 |
| 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) | 11.3 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.7 | 12.2 | 11.8 | 11.4 | 11.2 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.4 | 10.8 | 11.0 | 11.3 | 11.3 | 11.3 | 10.6 | 10.6 | 10.7 | 10.2 | 10.0 | 10.0 |
| Precipitation (mm) | 0 | 1 | 6 | 15 | 25 | 60 | 88 | 86 | 62 | 44 | 10 | 0 |
| Sunny days | 28 | 26 | 23 | 20 | 16 | 4 | 1 | 3 | 10 | 10 | 21 | 30 |
| Rainy days | 3 | 2 | 8 | 10 | 15 | 26 | 30 | 28 | 20 | 21 | 9 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at