Average annual temperature is 13.1 °C
Absolute maximum temperature: 28.0 °C
Absolute minimum temperature: -0.4 °C
Number of sunny days: 114 days
Number of rainy days: 251 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) | 23.1 | 26.5 | 26.6 | 28.0 | 25.5 | 27.9 | 23.6 | 23.5 | 23.4 | 23.5 | 25.1 | 19.9 |
| Average daytime temperature (°C) | 19.2 | 21.5 | 22.6 | 22.7 | 22.2 | 24.3 | 21.0 | 20.6 | 21.7 | 20.0 | 19.6 | 16.3 |
| Average temperature (°C) | 10.5 | 11.9 | 13.5 | 14.2 | 14.5 | 16.5 | 14.0 | 13.8 | 14.0 | 13.1 | 11.8 | 9.3 |
| Average night temperature (°C) | 4.3 | 4.8 | 6.7 | 8.2 | 8.4 | 9.9 | 8.7 | 9.0 | 8.6 | 8.7 | 6.7 | 4.9 |
| Absolute minimum temperature (°C) | 0.5 | -0.4 | 2.2 | 6.3 | 5.6 | 7.5 | 6.0 | 7.2 | 6.4 | 5.6 | 0.8 | 0.2 |
| 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 | 13.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.1 | 11.5 | 12.0 | 12.6 | 13.1 | 13.3 | 13.2 | 12.8 | 12.3 | 11.7 | 11.2 | 11.0 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 11.0 | 10.0 |
| Sunshine mean duration (h) | 10.3 | 10.5 | 10.8 | 11.2 | 11.8 | 12.2 | 11.5 | 10.6 | 11.2 | 9.1 | 9.3 | 7.8 |
| Precipitation (mm) | 8 | 7 | 64 | 60 | 93 | 36 | 92 | 107 | 25 | 66 | 25 | 51 |
| Sunny days | 18 | 19 | 8 | 1 | 1 | 17 | 1 | 3 | 12 | 8 | 15 | 11 |
| Rainy days | 13 | 9 | 23 | 29 | 30 | 13 | 30 | 28 | 18 | 23 | 15 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at