Average annual temperature is 27.2 °C
Absolute maximum temperature: 41.4 °C
Absolute minimum temperature: 13.3 °C
Number of sunny days: 129 days
Number of rainy days: 236 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) | 35.6 | 34.0 | 38.9 | 41.4 | 39.8 | 39.5 | 38.4 | 37.9 | 35.5 | 36.1 | 32.5 | 32.5 |
| Average daytime temperature (°C) | 31.3 | 31.7 | 35.1 | 37.1 | 36.9 | 36.9 | 35.6 | 35.0 | 33.3 | 32.8 | 30.1 | 28.4 |
| Average temperature (°C) | 24.8 | 25.3 | 27.4 | 29.0 | 29.5 | 30.2 | 29.0 | 28.6 | 27.1 | 26.9 | 25.1 | 23.4 |
| Average night temperature (°C) | 20.2 | 20.5 | 21.6 | 22.7 | 23.5 | 24.8 | 24.2 | 24.0 | 23.1 | 22.4 | 21.6 | 19.9 |
| Absolute minimum temperature (°C) | 13.3 | 15.1 | 18.9 | 20.7 | 19.8 | 22.4 | 22.2 | 21.8 | 21.6 | 18.8 | 19.2 | 14.4 |
| 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 | 11.5 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.0 |
| 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) | 9.6 | 9.9 | 10.4 | 11.3 | 11.5 | 11.4 | 11.1 | 11.0 | 10.2 | 10.1 | 8.9 | 8.2 |
| Precipitation (mm) | 16 | 19 | 24 | 9 | 36 | 57 | 86 | 112 | 163 | 83 | 103 | 49 |
| Sunny days | 15 | 14 | 19 | 19 | 17 | 9 | 7 | 2 | 0 | 11 | 7 | 9 |
| Rainy days | 16 | 14 | 12 | 11 | 14 | 21 | 24 | 29 | 30 | 20 | 23 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at