Average temperature in September is 19 °C
Average daytime temperature is 24.8 °C
Average night temperature is 13.4 °C
Absolute maximum temperature: 28.7 °C
Absolute minimum temperature: 9.1 °C
Number of sunny days: 22
Number of rainy days: 8
Number of snow days:
Precipitation sum: 79 mm
* Weather data for Kostanjevica Na Krki Slovenia 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 | 25.4 | 27.1 | 25.2 | 23.3 | 23.1 | 25.6 | 26.1 | 26.6 | 26.8 | 27.8 | 28.3 | 28.7 | 28.6 | 24 | 23.4 | 25 | 27 | 27.8 | 24.4 | 24.8 | 25.7 | 25.5 | 19.1 | 15.8 | 18.4 | 24.4 | 25.1 | 24.2 | 24.4 | 23.7 |
| Apparent max temperature | 27.8 | 29.4 | 27.7 | 22.2 | 22 | 26.4 | 26.2 | 27.5 | 28 | 30.1 | 31.3 | 31.1 | 28.8 | 26.7 | 24.4 | 26.1 | 28 | 29.8 | 26.4 | 27 | 26.7 | 26.2 | 20.3 | 15 | 18.4 | 24.9 | 24.5 | 24.5 | 25.2 | 24.6 |
| Mean temperature | 18.9 | 20.4 | 20.1 | 19.2 | 18.1 | 18.9 | 20.2 | 20.3 | 20.5 | 20.3 | 20.5 | 20.6 | 21.5 | 19.4 | 18.8 | 19.2 | 20 | 21 | 20.2 | 18.6 | 19.4 | 20.1 | 16.4 | 14.3 | 15.2 | 17.6 | 18.5 | 17.6 | 16.5 | 16.6 |
| Apparent mean temperature | 13.2 | 14.3 | 16.1 | 14.2 | 12.2 | 11.6 | 14.7 | 13.9 | 13.8 | 13.2 | 11.9 | 14 | 14.6 | 16.9 | 15 | 14.2 | 14.2 | 15.6 | 16.8 | 13.9 | 15.8 | 16.4 | 14.4 | 12 | 11.3 | 12.6 | 12.7 | 10.5 | 9.6 | 8.2 |
| Minimum temperature | 12.9 | 13.8 | 15.1 | 14.9 | 12.9 | 11.9 | 14.4 | 13.6 | 13.5 | 13.1 | 12 | 13.5 | 14.7 | 15.6 | 14 | 13.6 | 13.7 | 14.6 | 15.2 | 13.3 | 14.7 | 15.4 | 14.7 | 13.2 | 11.4 | 12.3 | 12.9 | 11 | 10.4 | 9.1 |
| Apparent min temperature | 20.5 | 22.2 | 21.7 | 18.3 | 17.5 | 19.4 | 20.3 | 21.1 | 21.4 | 21.8 | 22.4 | 21.9 | 22.2 | 21.6 | 20 | 20.6 | 21.3 | 22.4 | 21.6 | 20.2 | 20.4 | 21.5 | 17 | 13.6 | 15.2 | 18.3 | 18.7 | 17.8 | 16.8 | 17 |
| 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) | 13.3 | 13.3 | 13.2 | 13.2 | 13.1 | 13.1 | 13 | 12.9 | 12.9 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.1 | 12.1 | 12 | 12 | 11.9 | 11.9 | 11.8 | 11.8 |
| Sunshine duration (h) | 12 | 12 | 11 | 12 | 12 | 12 | 12 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.5 | 9.3 | 10.9 | 11.6 | 11.5 | 9.5 | 11.1 | 11.3 | 10.8 | 8.1 | 0.1 | 0 | 1.7 | 10.5 | 10.8 | 10.7 | 10.7 | 10.6 |
| Precipitation (mm) | 0 | 0 | 1.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0.1 | 0.1 | 0 | 0 | 0 | 0 | 1 | 10.2 | 39.8 | 17 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 5 | 10 | 22 | 14 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 10.8 | 5.4 | 14.2 | 18.6 | 18.5 | 12.1 | 13.5 | 10.9 | 8.7 | 4.8 | 5.2 | 6.8 | 17 | 8.6 | 7.2 | 6.6 | 10.2 | 14.6 | 11.2 | 7.1 | 15.5 | 16.4 | 15.9 | 12.7 | 16.1 | 13.4 | 12.9 | 10 | 4.9 | 8.6 |
In September 2023, the highest daytime temperature in Kostanjevica Na Krki was 28.7°C.
While the minimum temperature at night dropped to 9.1°C.
The average nighttime and daytime temperatures during September in Kostanjevica Na Krki are 13.4°C and 24.8°C respectively.
The precipitation sum in September is about 79 mm.