Weather in Daejeon in September
September in Daejeon is mild with average temperatures around 19.8°C (67.6°F). Expect significant rainfall with 134mm across approximately 10 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
24.5°C
76.1°F
Low
15.1°C
59.2°F
Precipitation
134 mm
5.3 inches
~10 rainy days
Conditions
Humidity
82%
Comparison to Adjacent Months
September is 5.0°C cooler than August, 120mm drier than August.
September is 6.5°C warmer than October, 81mm wetter than October.