Average annual temperature is 25.4 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: 17.8 °C
Number of sunny days: 25 days
Number of rainy days: 340 days
Look at detailed online map of Unión
* Weather data for Unión Colombia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.3 | 32.6 | 33.7 | 33.1 | 32.3 | 30.5 | 32.0 | 32.9 | 34.0 | 34.8 | 33.7 | 32.4 |
| Average daytime temperature (°C) | 29.8 | 30.2 | 30.1 | 29.4 | 29.5 | 28.1 | 28.6 | 30.4 | 31.2 | 31.7 | 30.9 | 29.5 |
| Average temperature (°C) | 25.0 | 25.4 | 25.3 | 25.0 | 25.2 | 24.1 | 24.5 | 25.4 | 26.1 | 26.6 | 26.2 | 25.5 |
| Average night temperature (°C) | 21.9 | 22.1 | 22.1 | 22.3 | 22.6 | 21.5 | 21.8 | 22.1 | 22.6 | 23.4 | 23.3 | 23.1 |
| Absolute minimum temperature (°C) | 20.8 | 20.8 | 21.2 | 21.2 | 22.1 | 17.8 | 20.8 | 20.7 | 21.1 | 21.9 | 22.2 | 22.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 9.2 | 8.9 | 7.7 | 7.8 | 8.2 | 7.8 | 9.0 | 10.0 | 9.5 | 9.0 | 8.7 | 8.0 |
| Precipitation (mm) | 203 | 157 | 282 | 349 | 361 | 262 | 414 | 201 | 164 | 187 | 312 | 455 |
| Sunny days | 4 | 3 | 5 | 0 | 0 | 0 | 1 | 3 | 3 | 4 | 1 | 1 |
| Rainy days | 27 | 25 | 26 | 30 | 31 | 30 | 30 | 28 | 27 | 27 | 29 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Unión is at