Average temperature in September is 23.8 °C
Average daytime temperature is 30.1 °C
Average night temperature is 18.8 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: 17.9 °C
Number of sunny days:
Number of rainy days: 30
Number of snow days:
Precipitation sum: 114 mm
* Weather data for La Unión Colombia is based on climate observations for 2023 year
| September (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 32.6 | 27.6 | 28.3 | 29.2 | 31 | 32.3 | 31.1 | 31.3 | 27.1 | 27.8 | 29.5 | 29.7 | 29.6 | 28.9 | 30.2 | 30.9 | 31.3 | 30.7 | 31.6 | 32.4 | 33.6 | 30.5 | 28.7 | 30 | 29.9 | 29.9 | 30.7 | 25.8 | 30.6 | 31.5 |
| Apparent max temperature | 36.2 | 31.2 | 33 | 34.2 | 34.9 | 35.9 | 35.1 | 35.9 | 30.4 | 31.6 | 34.2 | 34 | 33.2 | 33 | 33.4 | 35.2 | 34.2 | 35.4 | 35.7 | 35.1 | 35.7 | 33.6 | 31.4 | 32.5 | 34.2 | 33.6 | 34.7 | 28.4 | 33.9 | 36.4 |
| Mean temperature | 24.5 | 23.3 | 23 | 23 | 24.4 | 24.7 | 24.4 | 24.2 | 22.7 | 22.4 | 22.6 | 23.9 | 23.4 | 23.2 | 23 | 23.8 | 24 | 23.5 | 23.7 | 25.1 | 25.2 | 25.2 | 24.1 | 23.7 | 23.6 | 23.4 | 24.1 | 23 | 23.2 | 24.3 |
| Apparent mean temperature | 20.2 | 22.3 | 21.2 | 20.5 | 20.8 | 20.5 | 21.6 | 21.7 | 22 | 22.2 | 21.1 | 20 | 21.9 | 20.4 | 20.7 | 20.8 | 22.4 | 20.8 | 20.2 | 22.4 | 20.1 | 22.3 | 22.9 | 21.1 | 20.6 | 22 | 21.9 | 22.7 | 20.6 | 22.2 |
| Minimum temperature | 18 | 19.5 | 18.6 | 18.8 | 18.6 | 18 | 18.9 | 19.2 | 19.3 | 19.3 | 18.5 | 18 | 19.2 | 18.2 | 18.2 | 18.3 | 19.3 | 18.5 | 17.9 | 19.9 | 18.2 | 19.1 | 20 | 18.8 | 18 | 19 | 19.3 | 20.1 | 18.2 | 19.4 |
| Apparent min temperature | 27.3 | 26.1 | 26.3 | 26.2 | 27.3 | 27.7 | 27.3 | 27.4 | 26 | 25.6 | 25.8 | 26.9 | 26.3 | 26 | 25.8 | 26.5 | 26.8 | 26.4 | 26.6 | 27.6 | 27.6 | 27.8 | 27 | 26.3 | 26.5 | 26.7 | 27.1 | 25.7 | 26.1 | 27.7 |
| September | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunshine duration (h) | 10.6 | 5.2 | 10 | 11.2 | 11.2 | 11.5 | 9.7 | 10.6 | 6.1 | 9 | 9.7 | 11.3 | 11.5 | 8.8 | 8 | 11.2 | 10.6 | 10.2 | 10.9 | 11.5 | 11.4 | 11.1 | 9.2 | 8.5 | 9.8 | 10.6 | 10 | 2.3 | 11.2 | 10.4 |
| Precipitation (mm) | 0.8 | 1.8 | 9.1 | 4.9 | 0.9 | 0.3 | 0.4 | 1.8 | 21.3 | 11.8 | 2.6 | 2.9 | 2.7 | 4.6 | 2.3 | 0.6 | 1.3 | 1.1 | 3.5 | 3.9 | 0.1 | 2.5 | 4.9 | 1.7 | 1 | 2.5 | 2.2 | 8.2 | 0.5 | 11.4 |
| Precipitation hours | 5 | 4 | 6 | 7 | 6 | 3 | 4 | 5 | 15 | 11 | 10 | 6 | 6 | 4 | 5 | 5 | 5 | 5 | 4 | 5 | 1 | 6 | 5 | 5 | 5 | 7 | 5 | 15 | 1 | 10 |
| Wind speed (m/s) | 13 | 8.5 | 9.3 | 8.4 | 7.9 | 13.8 | 13.2 | 10.8 | 8.8 | 8.6 | 9.5 | 7.9 | 12.2 | 9.7 | 16.3 | 8.5 | 10.2 | 10.3 | 10.8 | 12.6 | 10.7 | 8 | 9.6 | 11 | 10.1 | 7.1 | 6.2 | 10.9 | 10.5 | 9.3 |
In September 2023, the highest daytime temperature in La Unión was 33.6°C.
While the minimum temperature at night dropped to 17.9°C.
The average nighttime and daytime temperatures during September in La Unión are 18.8°C and 30.1°C respectively.
The precipitation sum in September is about 114 mm.