Average annual temperature is 19.9 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: 6.5 °C
Number of sunny days: 216 days
Number of rainy days: 149 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) | 26.9 | 29.9 | 30.2 | 32.6 | 33.4 | 34.8 | 29.4 | 30.5 | 29.9 | 28.7 | 28.6 | 26.0 |
| Average daytime temperature (°C) | 23.8 | 25.9 | 28.0 | 29.6 | 30.6 | 32.0 | 26.9 | 26.8 | 27.1 | 25.2 | 25.6 | 23.2 |
| Average temperature (°C) | 17.0 | 18.4 | 19.2 | 20.9 | 22.2 | 22.6 | 20.9 | 20.8 | 21.3 | 19.6 | 19.2 | 17.2 |
| Average night temperature (°C) | 11.7 | 12.6 | 12.5 | 14.2 | 15.5 | 15.9 | 17.4 | 17.4 | 17.9 | 15.8 | 14.5 | 12.4 |
| Absolute minimum temperature (°C) | 6.5 | 9.0 | 9.2 | 11.3 | 12.6 | 12.8 | 15.7 | 15.7 | 15.9 | 12.2 | 10.2 | 8.3 |
| 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 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 | 13.3 | 12.8 | 12.3 | 11.7 | 11.1 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.9 | 10.5 | 11.2 | 11.8 | 11.7 | 11.8 | 10.0 | 8.9 | 9.7 | 8.8 | 9.8 | 8.5 |
| Precipitation (mm) | 1 | 0 | 0 | 0 | 1 | 52 | 316 | 238 | 134 | 257 | 43 | 22 |
| Sunny days | 27 | 28 | 31 | 28 | 25 | 23 | 0 | 1 | 1 | 11 | 17 | 24 |
| Rainy days | 4 | 0 | 0 | 2 | 6 | 7 | 31 | 30 | 29 | 20 | 13 | 7 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at