Events in Seoul in September 2027
Seoul event dates for September 2027 are still being announced. Start with the planning leads and the city guide below — the lineup firms up closer to September.
Seoul's September 2027 lineup is still being announced — planning leads below.
By TripSapien · Updated September 24, 2026
Sourced events
Dates for this month are still being announced. Start with the planning leads below, or build the rest of your visit from the city guide.
Open the Seoul guideGoing to Seoul in September?
Add your dates and we'll build the rest of your trip around these events — every place checked for closures and booking needs.
Planning leads
Early leads on events still lining up. Exact dates and details firm up closer to your trip.
- Sep 1 - Sep 4
Seoul. COEX, 513 Yeongdong-daero, Gangnam-gu Hall C.
Planning lead · projected date · Source: festival calendar
- Sep 1 - Sep 5
Seoul. COEX, Hall A-B, Grand Ballroom, 513 Yeongdong-daero, Gangnam-gu.
Planning lead · projected date · Source: festival calendar
- Sep 1 - Sep 5
Seoul Design Festival 2027
An exhibition and conference highlighting contemporary design trends, innovations, and workshops.
Planning lead · details firm up closer in · Source: festival research
Holidays, observances & long weekends
Holiday and observance schedules can affect services and venue hours; confirm each place directly.
- Korean Thanksgiving · publicSep 14
- Long weekend with bridge daySep 11–Sep 14
- Long weekend with bridge daySep 11–Sep 15
- Long weekend with bridge daySep 11–Sep 16
- Long weekend with bridge daySep 14–Sep 19
Holiday data: date-holidays (ISC/CC-BY-3.0).
Ready to plan Seoul?
Turn these September events into a full Seoul plan, every place checked for closures, limited hours, and booking needs on your dates.