Things to do in Seoul today (September 20): weather, where it’s quiet right now, 34 free events on, festivals this week

Sunday, September 20. This page is built from live data, not opinion: today’s weather, which popular areas are quiet or packed right now, the free events actually on today, and this week’s festivals in Seoul.

Weather

clear, 27°C now · today 17–28°C · rain chance 0% · sunset 18:32. Tomorrow clear, 17–29°C, rain 0%. (Open-Meteo)

Crowd levels right now — 23 popular spots

Relaxed right now: Itaewon · Seoul Station area. Crowded: Myeong-dong · Hongik Univ. Station · Gangnam Station · Gangnam MICE district (COEX) · Jongno & Cheonggyecheon · Gyeongbokgung Palace · Bukchon Hanok Village · Jamsil (Lotte World) · Yeouido Hangang Park · Ttukseom Hangang Park · Banpo Hangang Park (Rainbow Bridge) · Yongsan Station area.

Myeong-dong
Somewhat crowded 16:20
Hongdae
Moderate 16:20
Hongik Univ. Station
Somewhat crowded 16:20
Gangnam Station
Somewhat crowded 16:20
Gangnam MICE district (COEX)
Somewhat crowded 16:20
Itaewon
Relaxed 16:20
Dongdaemun
Moderate 16:20
Jongno & Cheonggyecheon
Somewhat crowded 16:20
Gwanghwamun & Deoksugung
Moderate 16:20
Gyeongbokgung Palace
Somewhat crowded 16:20
Changdeokgung & Jongmyo
Moderate 16:20
Bukchon Hanok Village
Somewhat crowded 16:20
Insa-dong
Moderate 16:20
Ikseon-dong
Moderate 16:20
Namsan Park (N Seoul Tower)
Moderate 16:20
Seongsu cafe street
Moderate 16:20
Jamsil (Lotte World)
Crowded 16:20
Yeouido
Moderate 16:20
Yeouido Hangang Park
Somewhat crowded 16:20
Ttukseom Hangang Park
Somewhat crowded 16:20
Banpo Hangang Park (Rainbow Bridge)
Somewhat crowded 16:20
Seoul Station area
Relaxed 16:20
Yongsan Station area
Crowded 16:20

Morning snapshot 2026-09-20; updates itself every 5 minutes while this page is open. Source: Seoul realtime city data.

Free events on today (34 short-run · 179 ongoing exhibitions not listed)

Free event on today Dates Where
[2026 조선왕릉 톺아보기] 도심 속 왕릉 예(禮) 산책 – 조선왕릉 골든벨
Workshops
09-20 – 09-20 선정릉 Gangnam-gu
2026 문래시티팝페스티벌
Festivals (culture & arts)
09-20 – 09-20 영등포구 도림로 141길 특설무대 Yeongdeungpo-gu
[서울아트책보고] 이루리북스 『해충 3대 비극』북토크: 해충과 나누는 대화
Workshops
09-20 – 09-20 서울아트책보고 워크숍룸 Guro-gu
2026 다름다움 페스티벌
Community festivals
09-20 – 09-20 반포한강공원 예빛섬 야외무대 일원 Seocho-gu
[서울갤러리] 추향저격 라이브 [싱어송라이터 유카]
Concerts
09-20 – 09-20 서울갤러리 지하 1층 공연장 Jung-gu
[TEAM 낙원장×김근태기념도서관] 9월 오픈도서관 [당신의 왜]
Workshops
09-20 – 09-20 김근태기념도서관 전관 Dobong-gu
[서울도서관] 2026 움직이는 서울형책방 13회 : 독서관
Workshops
09-20 – 09-20 광화문 라운지 (실내) ※광화문역 9번 출구 Jongno-gu
명인 최경만, 여든 해의 울림 ― 산수예찬 傘壽禮讚
Korean traditional music
09-20 – 09-20 국립국악원 예약당 Seocho-gu
[서울시립과학관] 메이커 페어 서울 (Maker Faire Seoul) 2026
Festivals
09-19 – 09-20 동대문디자인플라자 DDP 미래로 일대 1F 미래로 | 3F 디자인랩, 4F 잔디사랑방 Jung-gu
서울거리예술축제 2026
Festivals (culture & arts)
09-19 – 09-20 뚝섬한강공원, 서울숲 Gwangjin-gu
2026 서리풀뮤직페스티벌
Festivals (culture & arts)
09-19 – 09-20 반포대로(서초역~서초3동 사거리) Seocho-gu
[구로구] 구로G페스티벌(아시아문화축제)
Festivals (culture & arts)
09-19 – 09-20 안양천(구일역) ~ 안양천 생태초화원(도림천역) Guro-gu
[서울문화재단] 서울스테이지 in 어텀
Musicals & opera
09-18 – 09-20 서울숲 야외무대 Seongdong-gu
[동대문문화재단] 2026 답십리영화미디어아트센터 영화제 [시네마 웨이브]
Festivals (culture & arts)
09-18 – 09-20 답십리영화미디어아트센터 Dongdaemun-gu
[마포구립서강도서관] 9월/행사 [2026년 과월호 정기간행물 무료 나눔]
Other
09-18 – 09-20 마포구립서강도서관 3층 세미나실 Mapo-gu

Also on today (ticketed)

Event Dates Where
2026 홍난파가곡제 [나의 살던 고향은]
세종문화회관 대극장 · Concerts
09-20 VIP석: 10만원 / R석: 8만원 / S석: 6만원 / A석: 4만원
[이회영기념관] 벗집손클럽 – 손뜨개
이회영기념관 1층 벗집마루 · Workshops
09-19 – 11-21 5회: 5만원 (재료비 별도 안내 예정)
ODCF 2026 – 아직 오지 않은 세계를 위한 리허설
한남동 LDK · Festivals
09-19 – 09-20 FESTIVAL PASS 100,000원 / DAY 1 ALL PASS
2026 서울어텀페스타
서울 전역의 실내외 공연장, 한강공원 일대, 서울문화재단 대학로센터 등 · Festivals (culture & arts)
09-18 – 11-29 각 공연 / 축제별 상이
[서울시 어울림플라자] 어울림 성장캠프 : 일도 JOB GO! 미래도 JOB GO!
서울시 어울림플라자 3층 연수시설, 4층 연수객실 · Workshops
09-18 – 09-20 1인 135,000원 (장애인 할인 50% 적용 금액)
서울국제컴퓨터음악제 2026
연세대학교 음악대학 체임버홀 외 · Festivals (culture & arts)
09-17 – 09-20 [1일권] 1만원, [페스티벌 패스] 2만원, [Fest-m 및 리스닝
연극 [페이백]
미아리고개예술극장 · Theatre
09-17 – 09-20 30,000원
커피 볶는 기타리스트 김성진의 [한 잔의 여유 시리즈]
라율아트홀 · Classical
09-15 – 11-17 1회 30,000원

Festivals in Seoul this week

Festival (Seoul) Dates Where
Gugak Performance Jinyeon (국악공연 진연) 01-01 – 12-31 10 Insadong 5-gil, Jongno-gu, Seoul
COSMOS BIGBANG 20TH ANNIVERSARY MEDIA EXHIBITION 08-24 – 09-27 B127 Seosomun-ro, Jung-gu, Seoul
Seoul Architecture Festival (서울건축문화제) 09-15 – 10-11 119 Sejong-daero, Jung-gu, Seoul
Jamunbak Cultural Festival (자문밖문화축제) 09-18 – 09-20 5 Pyeongchang 31-gil, Jongno-gu, Seoul
Seoul Street Arts Festival (서울거리예술축제) 09-19 – 09-20 10 Neungdong-ro, Gwangjin-gu, Seoul

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FAQ

What is the weather in Seoul today?

clear, 27°C at the morning check, 17–28°C for the day with a 0% chance of rain.

Which parts of Seoul are least crowded right now?

At the last reading: Itaewon, Seoul Station area. The grid above updates itself every five minutes from the city’s sensors.

Where does this page get its data?

Weather from Open-Meteo; crowd levels from the City of Seoul realtime city data; events from the Seoul cultural events database; festivals from the Korea Tourism Organization. Nothing here is written by hand — it is rebuilt every morning and the live parts refresh while you read.

Sources: Open-Meteo · Seoul realtime city data · Seoul cultural events · Korea Tourism Organization TourAPI · page rebuilt 2026-09-20.