Daejeon
September
Weather in Daejeon for September 2025
Your guide to Daejeon weather in September - trends and predictions
Heavy Rain Advisory - See hour by hour.
Until now, September 2025 in Daejeon is slightly cooler than the historical average by -1.5 °C.
The forecast for the next days in Daejeon predicts a temperature of 23 °C, which is cooler than the historical average.
In general, the average temperature in Daejeon at the beginning of September is 29.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.7 °C by the end of September.
The climate of Daejeon in September is notably wet, with an average of 12 rainy days, and a total of 204.4 mm of precipitation.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
18
Dry days
12
Rainy days
0
Snow days
28°/19°
Temperatures
11 km/h
Avg max wind
80 %
Avg humidity
Daejeon Weather September
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Temperatures trend during September in Daejeon
See the weather trend as well as the moving average line
September weather in Daejeon day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 30° /19° | 3.6 mm | 7 | |
| 2 Sept. | Patchy rain possible | 28° /19° | 2.7 mm | 6 | |
| 3 Sept. |  Patchy light drizzle | 31° /19° | 1.9 mm | 7 | |
| 4 Sept. |  Sunny | 29° /17° | 1.4 mm | 7 | |
| 5 Sept. |  Mist | 30° /18° | 0 mm | 7 | |
| 6 Sept. | Light rain shower | 29° /20° | 5.2 mm | 7 | |
| 7 Sept. | Light rain shower | 27° /19° | 15.6 mm | 6 | |
| 8 Sept. | Patchy rain possible | 28° /17° | 0 mm | 7 | |
| 9 Sept. | Light rain shower | 30° /19° | 1 mm | 7 | |
| 10 Sept. | Mist | 31° /17° | 0 mm | 7 | |
| 11 Sept. | Light rain shower | 32° /19° | 3.6 mm | 7 | |
| 12 Sept. | Light rain shower | 25° /20° | 9.6 mm | 6 | |
| 13 Sept. | Light rain shower | 28° /19° | 7.8 mm | 7 | |
| 14 Sept. | Patchy rain possible | 32° /23° | 0.1 mm | 7 | |
| 15 Sept. | Patchy rain possible | 29° /20° | 0.2 mm | 1.3 | |
| 16 Sept. |  Moderate rain | 28° /19° | 8.2 mm | 1.5 | |
| 17 Sept. | Moderate rain | 26° /22° | 13.1 mm | 1.3 | |
| 18 Sept. | Moderate rain | 21° /18° | 14.1 mm | 1.4 | |
| 19 Sept. | Moderate rain | 19° /16° | 6 mm | 4 | |
| 20 Sept. | Patchy rain possible | 19° /15° | 0.6 mm | 4 | |
| 21 Sept. |  Partly cloudy | 22° /15° | 0 mm | 5 | |
| 22 Sept. | Sunny | 25° /13° | 0 mm | 5 | |
| 23 Sept. | Partly cloudy | 25° /16° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 19° /17° | 0.2 mm | 4 | |
| 25 Sept. | Patchy rain possible | 24° /18° | 0.4 mm | 5 | |
| 26 Sept. | Moderate rain | 18° /16° | 11.2 mm | 4 | |
| 27 Sept. | Partly cloudy | 24° /13° | 0 mm | 5 | |
| 28 Sept. | Sunny | 23° /12° | 0 mm | 5 | |
| 29 Sept. | Sunny | 25° /16° | 0 mm | 7 | |
| 30 Sept. | Sunny | 26° /13° | 0 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Daejeon in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Daejeon forecast closer to your planned date for the most up-to-date weather information.
Change Month
Daejeon in September - FAQ
What are the expected maximum and minimum temperatures in Daejeon during September?
During September, expect a variety of temperatures with highs around 28° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Daejeon during September?
Significant rainfall exceeding 204.4 mm is expected in Daejeon during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Daejeon during September?
The average wind speed in Daejeon during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Daejeon
Explore the daily rainfall trends and prepare for Daejeons September weather 💧
UV exposure in Daejeon during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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