Average annual temperature is 25.6 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: 18.2 °C
Number of sunny days: 257 days
Number of rainy days: 108 days
Look at detailed online map of La Unión
* Weather data for La Unión Peru is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 36.1 | 37.5 | 37.0 | 32.0 | 34.5 | 34.0 | 34.2 | 34.0 | 33.0 | 33.9 | 33.2 | 38.5 |
| Average daytime temperature (°C) | 34.0 | 35.4 | 32.1 | 30.7 | 32.1 | 31.7 | 31.9 | 31.9 | 31.8 | 32.2 | 31.6 | 32.6 |
| Average temperature (°C) | 26.2 | 28.2 | 26.5 | 26.0 | 26.2 | 25.4 | 25.0 | 24.8 | 24.5 | 24.7 | 24.2 | 25.5 |
| Average night temperature (°C) | 21.2 | 23.6 | 22.9 | 23.1 | 22.2 | 21.1 | 20.6 | 20.3 | 19.9 | 20.4 | 19.7 | 21.2 |
| Absolute minimum temperature (°C) | 19.2 | 22.4 | 21.8 | 21.9 | 21.3 | 19.5 | 19.7 | 19.4 | 18.8 | 19.9 | 18.2 | 19.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.4 | 12.3 | 12.1 | 12.0 | 11.9 | 11.8 | 11.8 | 11.9 | 12.1 | 12.2 | 12.4 | 12.4 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 10.2 | 10.1 | 9.1 | 8.5 | 9.7 | 10.3 | 10.6 | 10.8 | 11.1 | 10.3 | 10.5 | 10.3 |
| Precipitation (mm) | 5 | 41 | 256 | 380 | 15 | 0 | 0 | 11 | 0 | 1 | 7 | 47 |
| Sunny days | 23 | 12 | 4 | 0 | 25 | 29 | 29 | 29 | 30 | 29 | 26 | 21 |
| Rainy days | 8 | 16 | 27 | 30 | 6 | 1 | 2 | 2 | 0 | 2 | 4 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at