Showing: Oct · Sayo Garcia / Unsplash
South Korea · East Asia
Best time to visit Seoul
October
Oct scores highest overall — reliable weather and strong local atmosphere. Set your priorities above to personalise this result.
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Oct
Sayo Garcia / Unsplash
Seoul at its most spectacular — autumn foliage rivals cherry blossom for sheer beauty.
18.4°C
High
10.8°C
Low
60mm
Rain
7.5h
Sun/day
What you gain
- ↑Namsan, Bukhansan, and Changdeokgung Secret Garden in peak foliage: deep reds and golds
- ↑18°C: ideal hiking weather for the national parks surrounding the city
- ↑Seoul Lantern Festival on Cheonggyecheon stream: one of the most atmospheric events of the year
What you sacrifice
- ↓Foliage tourism drives accommodation prices 30–40% above summer lows
- ↓Popular hiking routes (Bukhansan) crowded on weekends — start before 8am
- ↓60mm of rain: some foliage weekends disrupted
Oct scores highest overall — reliable weather and strong local atmosphere. Set your priorities above to personalise this result.
Oct
Seoul at its most spectacular — autumn foliage rivals cherry blossom for sheer beauty.
18.4°C
High
60mm
Rain
7.5h
Sun
- ↑Namsan, Bukhansan, and Changdeokgung Secret Garden in peak foliage: deep reds and golds
- ↑18°C: ideal hiking weather for the national parks surrounding the city
- ↑Seoul Lantern Festival on Cheonggyecheon stream: one of the most atmospheric events of the year
- ↓Foliage tourism drives accommodation prices 30–40% above summer lows
- ↓Popular hiking routes (Bukhansan) crowded on weekends — start before 8am
- ↓60mm of rain: some foliage weekends disrupted
Top travel windows
★ BestOctober
Best overall
Highest combined score
18.4°C
High
60mm
Rain
7.5h
Sun
January
Best for value
Lowest prices & fees
1.1°C
High
21mm
Rain
6.5h
Sun
January
Fewest crowds
Quietest month
1.1°C
High
21mm
Rain
6.5h
Sun
Breakdown by priority
Best for weather
October
18.4°C high · 60mm rain · 7.5hrs sun/day
Best for budget
January
Very dry and sunny: clear blue skies make palace photography exceptional
Fewest crowds
January
Very dry and sunny: clear blue skies make palace photography exceptional
Month by month breakdown
January#7▾
Gains
- ↑Very dry and sunny: clear blue skies make palace photography exceptional
- ↑Ski resorts (Gangwon province) 2 hours from Seoul — day trips entirely viable
- ↑Lunar New Year (Seollal) preparations add festive energy to traditional markets
Sacrifices
- ↓−6°C overnight: serious cold requiring full winter kit — base layers, down jacket, hand warmers
- ↓Most outdoor cultural activities significantly limited
- ↓Palaces and parks beautiful but exposure requires planning
February#8▾
Gains
- ↑Lunar New Year (Seollal, usually January or February): Gyeongbokgung Palace opens for traditional games and hanbok
- ↑Winter sales season: Myeongdong and Dongdaemun shopping at annual discount levels
- ↑Ski season at its peak — best snow conditions for Gangwon day trips
Sacrifices
- ↓Still −3°C overnight: full winter gear essential
- ↓Lunar New Year week sees domestic travel surge and some closures
- ↓Cold limits outdoor time between attractions
March#5▾
Gains
- ↑First cherry blossom buds appear on Yeouido in late March
- ↑9°C afternoons: Bukchon Hanok Village and Namsan walks increasingly pleasant
- ↑Prices competitive before the April cherry blossom surge
Sacrifices
- ↓Still cold enough for a jacket most of the day
- ↓Cherry blossom hasn't peaked — late March visitors get a preview, not the full spectacle
- ↓Yellow dust (hwangsa) from China can affect air quality on some days
April#2▾
Gains
- ↑Yeouido Cherry Blossom Festival: the Han River and Namsan transformed into something genuinely breathtaking
- ↑16°C afternoons: the perfect temperature for long walking days through the old city
- ↑Gyeongbokgung Palace in hanbok surrounded by cherry blossom is extraordinary
Sacrifices
- ↓Hotel prices spike 50–70% for cherry blossom weeks — book 3–4 months ahead
- ↓Yeouido park on peak weekend: genuinely impassable, arrive before 8am
- ↓90mm of rain: blossom can be washed off early by April showers
May#3▾
Gains
- ↑21°C: ideal for walking between Gyeongbokgung, Insadong, and the Cheonggyecheon stream
- ↑Lotus Lantern Festival (Bucheon: Buddha's Birthday) brings lantern parades to Jogyesa temple
- ↑Prices 20–30% below cherry blossom peak with still-excellent conditions
Sacrifices
- ↓93mm of rain: spring showers remain frequent
- ↓Blossom gone — the Instagram peak moment has passed
- ↓Tourism still elevated from cherry blossom season
June#10▾
Gains
- ↑Prices dropping from spring peak
- ↑Namdaemun and Gwangjang markets fully operational regardless of rain — eat brilliantly
- ↑Air conditioning is universal: museums, malls, and coffee shops all refreshing retreats
Sacrifices
- ↓165mm: heavy rainy season begins — monsoon downpours most days
- ↓High humidity (72%): oppressive heat-humidity combination for outdoor walking
- ↓Some outdoor attractions partially closed after heavy rain events
July#11▾
Gains
- ↑Cheapest month for accommodation and tours
- ↑Some museums and indoor cultural attractions genuinely excellent regardless of weather
- ↑Korean summer food culture — naengmyeon (cold noodles) and bingsu (shaved ice) at their best
Sacrifices
- ↓252mm of rain: typhoon-level downpours, flash flooding in some districts
- ↓28°C+ with 78% humidity — the hottest and most uncomfortable combination of the year
- ↓Most palace gardens and outdoor heritage sites at their least enjoyable
August#12▾
Gains
- ↑Still relatively cheap
- ↑Boryeong Mud Festival (coastal Korea) if you're branching outside Seoul
- ↑Late August: monsoon beginning to ease, conditions improving week by week
Sacrifices
- ↓249mm of rain: sustained heavy showers most afternoons
- ↓29°C+ combined with 76% humidity makes outdoor sightseeing genuinely unpleasant
- ↓Peak heat index: felt temperature often exceeds 35°C
September#4▾
Gains
- ↑Chuseok (Harvest Festival): one of Korea's most important cultural celebrations — traditional food, family gatherings, hanbok everywhere
- ↑25°C: outdoor Seoul becoming manageable again
- ↑Prices reasonable as tourism hasn't yet returned to autumn peak
Sacrifices
- ↓138mm still significant — monsoon not fully over
- ↓Chuseok week: some shops and restaurants closed; domestic travel surge means transport crowded
- ↓Autumn foliage hasn't arrived yet — the best is still weeks away
October#1▾
Gains
- ↑Namsan, Bukhansan, and Changdeokgung Secret Garden in peak foliage: deep reds and golds
- ↑18°C: ideal hiking weather for the national parks surrounding the city
- ↑Seoul Lantern Festival on Cheonggyecheon stream: one of the most atmospheric events of the year
Sacrifices
- ↓Foliage tourism drives accommodation prices 30–40% above summer lows
- ↓Popular hiking routes (Bukhansan) crowded on weekends — start before 8am
- ↓60mm of rain: some foliage weekends disrupted
November#6▾
Gains
- ↑Late foliage in some parks still spectacular through mid-November
- ↑Prices dropping from October peak: good value for cultural access
- ↑Very dry (33mm): clear, cold days for palace photography
Sacrifices
- ↓Getting cold: 3°C nights require real winter kit
- ↓Peak foliage passed — some parks already bare by late November
- ↓Shorter days limit outdoor exploration time
December#9▾
Gains
- ↑Very dry and blue-sky: Gyeongbokgung Palace guards ceremony photogenic all day
- ↑Budget hotels before the January–February lowest point
- ↑Insadong and Bukchon Hanok Village quiet: the alleys without the April hordes
Sacrifices
- ↓−3°C overnight: genuinely cold — Seoul winter requires serious preparation
- ↓Limited outdoor café culture; life moves indoors to PC bangs, jjimjilbang, and restaurants
- ↓Christmas is not a major Korean holiday — limited festive atmosphere in public
How this is calculated
Climate data
Open Meteo ERA5
30-year normals (1991–2020). Temperature, rainfall, sunshine, humidity.
Price & crowd
Tourism research
Seasonal pricing from tourism authority data. Directional — compares months within a destination only.
Personalisation
Weighted scoring
Your priorities change the weights. Budget-first users get different results than weather-first users.
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October is the best time to visit Seoul