Average temperature in September is 22.8 °C
Average daytime temperature is 26.7 °C
Average night temperature is 19.4 °C
Absolute maximum temperature: 30.4 °C
Absolute minimum temperature: 13.8 °C
Number of sunny days: 12
Number of rainy days: 18
Number of snow days:
Precipitation sum: 239 mm
* Weather data for Daejeon South Korea 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 | 28.6 | 29.9 | 30.4 | 29.1 | 30.1 | 30.1 | 28.4 | 27.7 | 29 | 29.2 | 28.9 | 28.8 | 23.5 | 24.1 | 24 | 29.3 | 28.1 | 28.3 | 27.7 | 23.6 | 22 | 23.9 | 24.6 | 24.1 | 25.8 | 22.8 | 24.7 | 26.5 | 23.1 | 23.7 |
| Apparent max temperature | 31.6 | 33.9 | 36.5 | 35 | 34.7 | 34.1 | 30.6 | 31.7 | 33.3 | 33.7 | 33.1 | 32.9 | 28.1 | 26.6 | 27.2 | 34.8 | 32.2 | 32.2 | 30.9 | 26.1 | 23.8 | 25.6 | 25.8 | 23.4 | 27.7 | 26.5 | 26.6 | 28.1 | 24.5 | 24.3 |
| Mean temperature | 23 | 25.5 | 26.1 | 25.6 | 25.9 | 25.1 | 23.3 | 23.2 | 24.4 | 24.9 | 24.6 | 25 | 21.9 | 22.7 | 22.5 | 23.8 | 23.9 | 24 | 24.2 | 21 | 18.3 | 19.1 | 20.5 | 20.9 | 22.1 | 21.7 | 21.5 | 21.1 | 19.8 | 18.5 |
| Apparent mean temperature | 19.1 | 25.5 | 26.8 | 26.8 | 23.6 | 21.3 | 18.4 | 19.3 | 21.7 | 24 | 23.6 | 25.7 | 23.4 | 23.9 | 24.6 | 24.1 | 25.1 | 24.1 | 25.3 | 17.8 | 15.3 | 15.9 | 16.6 | 18.3 | 19.3 | 21.3 | 21.9 | 18.5 | 18.3 | 13.8 |
| Minimum temperature | 17.6 | 22.2 | 22.5 | 22.7 | 21.2 | 19 | 17.2 | 17.6 | 19.3 | 20.7 | 20.4 | 22.2 | 20.7 | 21.6 | 21.2 | 20.8 | 21.2 | 20.7 | 21.7 | 18.3 | 14.5 | 15.7 | 17.1 | 19.1 | 19.4 | 19.9 | 19.4 | 16.7 | 17.2 | 13.8 |
| Apparent min temperature | 25.7 | 29 | 30.9 | 30.3 | 29.1 | 28 | 24.8 | 25.6 | 27.6 | 28.4 | 27.9 | 28.7 | 25.3 | 25.2 | 26.1 | 28 | 27.8 | 27.7 | 27.7 | 21.9 | 19.6 | 20.2 | 20.7 | 20.1 | 23.8 | 24.5 | 23.8 | 23.2 | 21 | 18.8 |
| 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 | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12 | 12 | 11.9 | 11.9 | 11.9 |
| Sunshine duration (h) | 12 | 11.6 | 9.1 | 6.6 | 10.8 | 11.6 | 11.6 | 11.5 | 11.1 | 11.1 | 10.1 | 10 | 0 | 1 | 0 | 5 | 6.1 | 10 | 7.2 | 0 | 1.9 | 10.1 | 7.2 | 7.9 | 7 | 0 | 5 | 9.9 | 4 | 10.9 |
| Precipitation (mm) | 0 | 0.2 | 0.2 | 0.9 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 | 3.3 | 34.3 | 13.1 | 22.2 | 36.6 | 6.9 | 1.1 | 0 | 79.6 | 0 | 0.1 | 0 | 0.6 | 27.4 | 6.6 | 3.2 | 0 | 2.7 | 0 |
| Precipitation hours | 0 | 1 | 2 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5 | 24 | 17 | 23 | 13 | 6 | 9 | 0 | 16 | 0 | 1 | 0 | 3 | 13 | 15 | 7 | 0 | 5 | 0 |
| Wind speed (m/s) | 11.2 | 17 | 7.9 | 11.6 | 12.3 | 10.3 | 14.9 | 8.8 | 7.2 | 6.9 | 8.8 | 6.1 | 8.8 | 16 | 15.6 | 14.5 | 9.9 | 13.3 | 7.7 | 38.5 | 10.1 | 8.5 | 15.2 | 19.2 | 14.7 | 13.7 | 13.8 | 11.2 | 5.9 | 13.8 |
In September 2023, the highest daytime temperature in Daejeon was 30.4°C.
While the minimum temperature at night dropped to 13.8°C.
The average nighttime and daytime temperatures during September in Daejeon are 19.4°C and 26.7°C respectively.
The precipitation sum in September is about 239 mm.