Daejeon weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: April – June, September – October
What is the weather like in Daejeon in September?
In September, Daejeon is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 156 mm in total. All in all, September is a good month for a holiday in Daejeon.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 49 | 79 | 89 |
| Day | 30° | 26° | 20° |
| Night | 23° | 17° | 10° |
| Sun | 6 h | 6 h | 7 h |
| Rain days | 15 | 9 | 5 |
More details for September
- Daylight
- 12 h 28 min06:12 – 18:40
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 10 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 60 %on averageAll months
- Hot days
- 2 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+9Asia/Seoul
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %50 %
- Few rainy daysweight 30 %62 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Rain jacket or umbrella
Daejeon in September: quick answers
Is Daejeon hot in September?
Warm rather than hot: in September, daytime highs in Daejeon average 26 °C and nights cool to about 17 °C. On about 2 days the thermometer climbs to 30 °C or more.
Does it rain much in Daejeon in September?
Rain is frequent, with about 9 rainy days and 156 mm in total.
Daejeon month by month
The whole year in DaejeonAll destinations: South KoreaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences