Average temperature in September is 21.4 °C
Average daytime temperature is 26.7 °C
Average night temperature is 16.4 °C
Absolute maximum temperature: 31.2 °C
Absolute minimum temperature: 11.9 °C
Number of sunny days: 24
Number of rainy days: 6
Number of snow days:
Precipitation sum: 5 mm
* Weather data for Isaccea Romania 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 | 28.5 | 29.4 | 29.1 | 25.6 | 26.8 | 27.3 | 28 | 25.4 | 27.6 | 23.6 | 23.8 | 25.8 | 27.7 | 31.2 | 24 | 24.3 | 24.4 | 25.1 | 25.3 | 25.2 | 26.9 | 27 | 28.7 | 28.1 | 28 | 27 | 26.7 | 26.9 | 26.8 | 27.1 |
| Apparent max temperature | 28.8 | 29.9 | 29.9 | 26 | 25.7 | 26.4 | 26.7 | 22.9 | 26.4 | 22.1 | 23.8 | 25.5 | 27.6 | 30.4 | 25.6 | 25.1 | 23.5 | 24.5 | 24.4 | 26 | 28 | 27.4 | 29.8 | 28.4 | 25 | 23.8 | 23.6 | 23.5 | 24.3 | 24.7 |
| Mean temperature | 24.1 | 23.9 | 23.9 | 21.2 | 22.6 | 22.2 | 22.1 | 21.1 | 21.3 | 18.9 | 18.6 | 20.1 | 21.4 | 24 | 21.4 | 20.7 | 19.9 | 20 | 20.7 | 20.1 | 21.5 | 22 | 22.9 | 22.4 | 21.7 | 21.4 | 20.4 | 20.1 | 20.9 | 20.6 |
| Apparent mean temperature | 21.8 | 20 | 19.6 | 18.6 | 17.3 | 17 | 16.5 | 14.5 | 13.5 | 12.7 | 11.1 | 13.4 | 13.9 | 18.4 | 18.3 | 18 | 15.1 | 14.5 | 16.6 | 17 | 19 | 18.8 | 21.1 | 18.4 | 17.6 | 16.2 | 14.4 | 13.2 | 15 | 12.3 |
| Minimum temperature | 20.6 | 18.6 | 18.5 | 18.1 | 18.8 | 17.9 | 16.3 | 15.5 | 14.9 | 13.9 | 11.9 | 13.3 | 13.8 | 17.6 | 17.7 | 17.2 | 15.5 | 14.9 | 16.2 | 16.3 | 17.6 | 17.7 | 19.4 | 17.6 | 17 | 16.9 | 15.3 | 14.2 | 16.4 | 13.7 |
| Apparent min temperature | 24.9 | 24.7 | 24.8 | 21.1 | 21.1 | 21.5 | 21.7 | 19.7 | 19.9 | 17.7 | 18.2 | 19.5 | 21.2 | 23.7 | 22.5 | 21.7 | 19.9 | 19.7 | 20.8 | 21.2 | 22.4 | 22.5 | 24.3 | 23.6 | 20.9 | 19.7 | 18.7 | 18.5 | 19.4 | 19.5 |
| 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 | 13.2 | 13.2 | 13.1 | 13.1 | 13 | 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 | 12 | 11.2 | 12 | 12 | 10.7 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 7.5 | 8.9 | 11.5 | 11.5 | 10.8 | 7.7 | 11.3 | 10.6 | 11.2 | 10.6 | 11.1 | 11 | 10.9 | 10.8 | 10.7 | 10.6 |
| Precipitation (mm) | 0 | 0 | 0.1 | 1.1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.7 | 2.3 | 0 | 0 | 0 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 1 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 15 | 10.8 | 14.8 | 18.5 | 22.7 | 16.7 | 17.2 | 16.4 | 18.7 | 13.6 | 8.4 | 13.4 | 17.7 | 19.3 | 8.9 | 14.1 | 15 | 12.9 | 13.4 | 8.4 | 13.3 | 19.9 | 18.3 | 14.3 | 22 | 25.3 | 23.4 | 17.9 | 18.7 | 15.7 |
In September 2023, the highest daytime temperature in Isaccea was 31.2°C.
While the minimum temperature at night dropped to 11.9°C.
The average nighttime and daytime temperatures during September in Isaccea are 16.4°C and 26.7°C respectively.
The precipitation sum in September is about 5 mm.