Seoul Weather in October: What to Expect
In October, Seoul averages highs of 18.6°C and lows of 9.1°C, with about 6 rainy days (~74 mm). Verdict: Good — comfortable — manageable 18.6°C days. That makes it the 4th hottest of South Korea's 6 main cities this month.
Seoul vs other South Korea cities in October
South Korea is not one climate. In October, Busan runs to 20.6°C while Sokcho sits at 18.3°C — a 2°C spread. Here is where Seoul falls:
What to pack for Seoul in October
With highs near 18.6°C and lows around 9.1°C, pack layers — a light jacket for mornings and evenings.
What to do in Seoul in October
October's weather suits sightseeing through the day. Top sights:
Public holidays in South Korea, October
- 2026-10-05 — National Foundation Day
- 2026-10-09 — Hangul Day
- 2027-10-04 — National Foundation Day
- 2027-10-11 — Hangul Day
Seoul in October — FAQs
What is the weather like in Seoul in October?
In October, Seoul averages daytime highs of 18.6°C and overnight lows around 9.1°C, with roughly 6 rainy days and about 74 mm of rain across the month. Good — comfortable — manageable 18.6°C days.
Is October a good time to visit Seoul?
Good — comfortable. October is comfortable enough for full-day sightseeing in Seoul. Among South Korea's cities, Seoul is the 4th hottest this month.
What should I pack for Seoul in October?
For October (9.1–18.6°C), pack layers — a light jacket for mornings and evenings.
What is there to do in Seoul in October?
Seoul's main sights include Changdeokgung, Gyeongbokgung, Hwaseong Fortress, Namsan Seoul Tower. The weather suits visiting these comfortably through the day.
Are there public holidays in South Korea in October?
Yes — National Foundation Day (2026-10-05), Hangul Day (2026-10-09), National Foundation Day (2027-10-04), Hangul Day (2027-10-11). Sites can be busier or closed around these dates.
Seoul weather by month: