Middling
South Korea in September: Weather, Crowds & What's On
What September is actually like in South Korea — average highs and lows, how much rain to expect, public holidays that fill trains and hotels, and verified places to go.
- Average high
- 25°C
- Average low
- 18°C
- Rainfall
- 162mm
Where this month sits in the year
The 4th warmest month of South Korea's year. The 3rd wettest month, at 12% of the year's rain.
Public holidays in September
Domestic travel peaks around these dates — book earlier and expect busier sights.
- September 24 추석 · Chuseok
Planning a trip this month?
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Climate figures are 10-year averages for Seoul, from NASA POWER; holidays from public calendars. Updated monthly.