Average annual temperature is 26.9 °C
Absolute maximum temperature: 40.7 °C
Absolute minimum temperature: 14.7 °C
Number of sunny days: 127 days
Number of rainy days: 238 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) | 30.4 | 33.3 | 37.8 | 40.7 | 40.2 | 40.7 | 34.7 | 34.4 | 34.5 | 34.5 | 30.6 | 30.5 |
| Average daytime temperature (°C) | 28.3 | 29.8 | 34.4 | 36.9 | 36.1 | 36.5 | 32.7 | 32.4 | 32.2 | 30.9 | 28.3 | 26.9 |
| Average temperature (°C) | 23.6 | 24.5 | 28.0 | 30.0 | 29.6 | 30.3 | 27.5 | 27.5 | 27.2 | 26.4 | 24.6 | 23.2 |
| Average night temperature (°C) | 20.1 | 20.4 | 22.8 | 24.2 | 24.1 | 25.3 | 23.9 | 23.8 | 23.5 | 23.0 | 22.0 | 20.3 |
| Absolute minimum temperature (°C) | 14.7 | 15.5 | 20.2 | 21.2 | 20.6 | 22.5 | 22.4 | 22.3 | 22.3 | 20.0 | 19.8 | 15.8 |
| 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) | 11.2 | 11.6 | 12.0 | 12.5 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.8 | 9.8 | 10.7 | 11.4 | 11.6 | 11.4 | 10.7 | 11.1 | 10.6 | 9.8 | 8.2 | 8.2 |
| Precipitation (mm) | 38 | 29 | 10 | 17 | 45 | 178 | 264 | 162 | 181 | 229 | 235 | 148 |
| Sunny days | 15 | 11 | 20 | 23 | 20 | 14 | 1 | 4 | 0 | 6 | 4 | 9 |
| Rainy days | 16 | 17 | 11 | 7 | 11 | 16 | 30 | 27 | 30 | 25 | 26 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at