Average annual temperature is 28.6 °C
Absolute maximum temperature: 38.9 °C
Absolute minimum temperature: 20.5 °C
Number of sunny days: 151
Number of rainy days: 214
Number of snow days:
Average annual precipitation: 1882 mm
Look at detailed online map of La Unión
* Weather data for La Unión El Salvador is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 35.4 | 36.7 | 36 | 37.1 | 38.9 | 35.4 | 37.7 | 36.8 | 35.5 | 34.3 | 35.9 | 37.5 |
| Average daytime temperature (°C) | 33 | 34.8 | 33.8 | 34.7 | 34.7 | 32.1 | 34.5 | 33.6 | 33.5 | 31.2 | 32.5 | 35.1 |
| Average temperature (°C) | 27.6 | 29.1 | 28.4 | 29.3 | 29.7 | 28.1 | 29.4 | 28.8 | 28.6 | 27.1 | 27.8 | 29.1 |
| Average night temperature (°C) | 23.2 | 24.3 | 24.2 | 25.2 | 25.7 | 25 | 25.5 | 25.3 | 24.9 | 24.2 | 24.5 | 24.8 |
| Absolute minimum temperature (°C) | 20.5 | 22.7 | 23 | 23.7 | 24.2 | 23.5 | 23.3 | 23.8 | 23.5 | 22.8 | 23 | 22.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.6 | 11.9 | 12.3 | 12.6 | 12.9 | 12.9 | 12.9 | 12.7 | 12.4 | 12 | 11.7 | 11.4 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.4 | 12.8 | 12.9 | 12.8 | 12.6 | 12.2 | 11.8 | 11.5 | 11.4 |
| Daylight minimum duration (h) | 11.4 | 11.6 | 11.9 | 12.3 | 12.6 | 12.9 | 12.7 | 12.4 | 12 | 11.7 | 11.4 | 11.3 |
| Sunshine mean duration (h) | 10.5 | 10.9 | 11.2 | 11.6 | 11.1 | 10.1 | 10.9 | 10.3 | 11 | 9.3 | 10.1 | 10.5 |
| Precipitation (mm) | 3 | 0 | 30 | 21 | 123 | 355 | 188 | 291 | 197 | 475 | 190 | 8 |
| Sunny days | 27 | 28 | 18 | 16 | 11 | 2 | 10 | 6 | 5 | 6 | 22 | |
| Rainy days | 4 | 13 | 14 | 20 | 28 | 21 | 25 | 25 | 31 | 24 | 9 |
The largest precipitation sum in La Unión is at