Seoul weather
11-year climate averages (2015–2025), month by month
Seoul in october
Current month averages, based on 11 complete years of records (2015–2025). Read the full guide →
Seoul sits at 37°33′N 126°58′E in South Korea, in Asia. Its climate profile is shaped by these coordinates — and the 11 complete years of records below (2015–2025) reveal exactly how each season feels on the ground.
Below, you'll find monthly averages for temperature, rainfall and sunshine, drawn from the Open-Meteo Archive. Every month links to a full guide with what to pack, where to stay, and when to arrive.
The year in weather
Seoul weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for Seoul.
Places that feel like Seoul in october
Seoul weather — FAQ
Q01When is the best time to visit Seoul?
When is the best time to visit Seoul?
The best months to visit Seoul are April, October. Mid-April cherry blossoms line the Yeouido Yunjungno road and the Han River picnic season officially opens with chimaek (chicken and beer) delivery from tents.
Q02What is the hottest month in Seoul?
What is the hottest month in Seoul?
August runs the highest averages in Seoul, with typical daytime highs of 29°C (85°F). August humidity hits 90% at 33C; locals escape to the Cheonggyecheon stream downtown where air-conditioned underground shopping tunnels connect for miles.
Q03What is the coldest month in Seoul?
What is the coldest month in Seoul?
January brings the lowest averages, with daytime highs near 2°C (35°F). January drops to -10C with 'sam-han-sa-on' cycle (three cold, four mild days); locals huddle at ondol-heated jjimjilbangs like Dragon Hill for overnight sauna stays.
Q04Which month has the most rain in Seoul?
Which month has the most rain in Seoul?
July typically records the highest monthly rainfall — around 312mm on average. Late June through July jangma monsoon dumps 400mm; the Han rises past cycling paths and Gangnam intersections flood, stranding buses for hours.
Q05What is the climate like in Seoul?
What is the climate like in Seoul?
Seoul, South Korea has warm summers, cold winters, a distinct rainy season. The city is split by the Han River and the neighborhoods have deep rivalries — Gangnam is nouveau-money, Gangbuk (Jongno, Ikseon-dong) is old-money and old-Seoul. Naver Maps works, Google Maps doesn't (Korean law blocks foreign mapping). Order at pojangmacha street tents late night in Jongno for sundae blood sausage and soju. The escalator etiquette is stand right, walk left, but on Seoul subway it's stand both sides — a Busan person will get annoyed. You can read the detailed month-by-month breakdown on this page.