Average annual temperature is 25.4 °C
Absolute maximum temperature: 40.3 °C
Absolute minimum temperature: 13.6 °C
Number of sunny days: 72 days
Number of rainy days: 293 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) | 30.7 | 30.5 | 34.6 | 40.1 | 37.4 | 40.3 | 31.9 | 32.9 | 32.2 | 34.6 | 30.3 | 30.6 |
| Average daytime temperature (°C) | 27.3 | 27.8 | 31.4 | 34.6 | 34.3 | 35.9 | 30.7 | 31.1 | 31.0 | 30.4 | 27.7 | 26.3 |
| Average temperature (°C) | 22.4 | 22.8 | 25.5 | 27.6 | 28.1 | 29.3 | 25.5 | 25.9 | 25.7 | 25.5 | 23.9 | 22.3 |
| Average night temperature (°C) | 18.7 | 19.1 | 21.0 | 22.1 | 23.1 | 24.3 | 22.1 | 22.1 | 22.0 | 22.0 | 21.2 | 19.2 |
| Absolute minimum temperature (°C) | 14.0 | 15.9 | 19.8 | 20.0 | 21.1 | 21.3 | 21.2 | 21.0 | 20.9 | 19.2 | 19.5 | 13.6 |
| 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) | 9.4 | 10.0 | 10.8 | 11.2 | 11.2 | 11.4 | 9.9 | 10.1 | 10.4 | 9.6 | 8.0 | 7.6 |
| Precipitation (mm) | 110 | 84 | 36 | 45 | 84 | 188 | 439 | 320 | 427 | 332 | 324 | 159 |
| Sunny days | 10 | 7 | 11 | 14 | 8 | 10 | 0 | 0 | 0 | 2 | 1 | 9 |
| Rainy days | 21 | 21 | 20 | 16 | 23 | 20 | 31 | 31 | 30 | 29 | 29 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at