Planning a trip to Seoul isn’t just about picking the sights, it’s also about choosing the right timing. The city goes through four very distinct seasons, and each one feels totally different.
Most travelers find spring (March to May) and autumn (September to November) are the best times to visit Seoul. The weather’s mild, skies usually look clearer, and being outdoors just feels more enjoyable.
Spring brings cherry blossoms that light up parks and streets. Autumn? Crisp air and bursts of color across palaces and mountains.
These shoulder seasons help you dodge Seoul’s sweltering, humid summers and its bone-chilling, dry winters. You’ll probably have more comfortable days to explore.
Picking the right season really shapes your experience in South Korea’s capital. Maybe you want to catch a festival, hike a scenic trail, or just wander old neighborhoods. Either way, knowing Seoul’s climate helps you plan with a bit more confidence.
Overview of Seoul Weather and Climate
Seoul sits inland, surrounded by mountains, so it has a temperate continental climate.
You’ll get hot, sticky summers, cold, dry winters, and spring and autumn that are shorter but much more comfortable.
Seoul’s Four Distinct Seasons
Seoul’s seasons don’t mess around—they’re all pretty different.
Spring (March–May) means mild weather and cherry blossoms everywhere. Summer (June–August) brings heat, humidity, and those famous monsoon rains. Autumn (September–November) has crisp air, clear skies, and trees turning every shade of red and yellow. Winter (December–February) gets cold and dry, with plenty of sub-zero days.
People love sightseeing in spring and autumn because the weather just feels right and outdoor spots look their best.
Summer and winter still have their fans, but you’ll need to be ready for weather extremes.
Temperature and Precipitation Patterns
Seoul’s temperatures swing a lot through the year. Winters can drop to -7°C (19°F), while summer highs hit around 30°C (86°F). January feels the coldest, and August usually wins for hottest.
Rain doesn’t show up evenly. About 60% of the year’s rain falls in the July and August monsoon. Winters barely see any rain or snow, especially compared to other chilly places.
Humidity jumps around too. In summer, it often tops 70%, so the heat feels heavier. Winter dries out, which makes the cold bite more, but the sky tends to stay clear.
Monthly Weather Highlights
- January–February: Freezing, dry, and the occasional dusting of snow. Bundle up if you go.
- March–April: It starts warming up, and cherry blossoms show up in April. Lots of visitors around.
- May–June: Warm and sunny, but humidity creeps in by late June.
- July–August: The hottest stretch, with heavy monsoon rains—sometimes 300 mm or more a month.
- September–October: Mild, dry, and full of color. October’s a local favorite.
- November–December: It cools off, skies stay clear, and winter starts to settle in.
You’ll want to match your trip to the kind of weather you like best—maybe spring flowers, autumn leaves, or even winter bargains.
Spring in Seoul: Cherry Blossoms and Mild Temperatures
Spring in Seoul feels like a breath of fresh air. Cherry blossoms bloom, the weather warms up, and festivals start popping up everywhere.
You’ll get to enjoy mild days and bursts of color, plus outdoor activities that show off both nature and culture.
When Is Spring in Seoul
Spring runs from March through May. Temperatures climb steadily, starting cool in March and feeling pretty warm by May.
March usually sits around 5°C to 13°C, April gets up to 10°C to 18°C, and May reaches 14°C to 23°C.
March evenings still feel chilly, honestly. April is great for long walks and sightseeing. By May, you’ll probably just need a light jacket or sweater.
Watch out for yellow dust and fine dust—air quality can dip in spring. Checking daily reports helps, and if you’re sensitive, bring a mask just in case.
Cherry Blossom Season and Festivals
Cherry blossoms usually burst open from late March to early April. The exact timing shifts each year, depending on how cold winter was.
Top spots for blossoms include Yeouido Park, Namsan Park, Seonyudo Island, and around Ansan Mountain.
The Yeouido Cherry Blossom Festival draws big crowds, with the streets near the National Assembly turning pink and lively. If you arrive just after peak bloom, you’ll see petals carpeting the ground—honestly, it’s just as photogenic.
Spring also brings the Seoul Marathon in March and the Hi Seoul Festival, which fills public spaces with performances and art. These events, plus the blossoms, make early spring a super busy time for both locals and tourists.
Top Spring Attractions and Activities
Spring is perfect for exploring Seoul’s outdoor gems. Bukchon Hanok Village shows off traditional houses surrounded by flowers. Wandering those narrow lanes just feels better in nice weather.
Parks along the Han River get packed with locals having picnics under the trees. Renting a bike is a great way to cruise the riverside trails.
If you’re craving culture, check out a palace like Gyeongbokgung when the courtyards are full of blossoms. Many people also dive into spring food traditions, like strawberry buffets that pop up in hotels and cafes.
These activities blend nature, history, and seasonal treats, making spring in Seoul feel really special.
Autumn in Seoul: Fall Foliage and Cultural Events
Autumn in Seoul is something else. Crisp air, colorful trees everywhere, and a mix of old and new festivals.
The season stands out for mild weather, amazing foliage, and events that show off both tradition and modern life.
When Is Autumn in Seoul
Autumn usually runs from late September to mid-November. Daytime temperatures hover between 15°C and 21°C (59°F–69°F), with nights dipping closer to 9°C (48°F).
Leaves start changing first in the mountains, then color spreads through the city. By late October, parks, palaces, and tree-lined streets look their best.
Humidity drops, skies clear up, and there’s less fine dust than in spring. It’s one of the most comfortable times for walking tours and outdoor events.
Pack layers—afternoons stay mild, but evenings can turn chilly. A jacket and comfy shoes go a long way for sightseeing.
Autumn Foliage and Park Highlights
Late October is prime time for foliage. Ginkgo and maple trees put on a show. Streets like Samcheong-dong and Deoksugung Stone Wall Road glow gold, while palace gardens turn deep red.
Top spots for autumn leaves:
- Namsan Park & N Seoul Tower—sweeping city views wrapped in color.
- Changdeokgung Palace Secret Garden—historic grounds with vibrant trees and peaceful ponds.
- Bukhansan National Park—hiking trails with epic autumn scenery.
- Seoul Forest & Olympic Park—easy-to-reach parks with plenty of space for picnics and strolls.
A walk along Cheonggyecheon Stream offers a quieter way to see fall colors. The illuminated bridges and tree-lined banks look especially pretty at night.
Major Autumn Festivals and Traditions
Autumn is festival season, mixing old-school traditions with modern fun. Chuseok, or Korean Thanksgiving, lands in late September or early October. Families pay respects to ancestors, share special foods, and cultural sites often host folk performances.
The Seoul Lantern Festival lights up Cheonggyecheon Stream in November, drawing crowds with glowing displays that tell stories from Korean folklore and history.
Other highlights? The Hi Seoul Festival brings street shows and art installations, while the Seoul Fringe Festival features indie theater and music. These events let you experience Seoul’s creative side in public spaces.
All together, autumn’s traditions and festivals give you a real taste of Seoul’s history and lively culture during the most colorful time of year.
Summer in Seoul: Hot Weather, Rainy Season, and Festivals
Summer in Seoul gets intense. It’s the hottest time, with lots of rain and a jam-packed festival calendar.
You’ll deal with some weather challenges, but you’ll also find plenty of energy and things to do.
When Is Summer in Seoul
Summer usually runs from late June through August. It’s short but packs a punch.
The hottest stretch hits in July and early August—highs often reach 30–35°C (86–95°F). Nights stay warm, rarely dipping below 23°C (73°F).
This is also the rainy season, or jangma, from late June to late July. Expect regular downpours and high humidity.
Spots like Myeongdong stay busy, since people flock to shopping malls and air-conditioned cafes. If you’re visiting in summer, booking your hotel early is a smart move.
Weather Conditions and What to Expect
Summer in Seoul means heat, humidity, and rain—sometimes all at once. July alone can bring almost half the city’s yearly rain.
Humidity often hits 80–100%, making it feel even hotter. Shaded parks or indoor attractions like museums offer a break.
Rain usually comes in short, heavy bursts. Streets can flood, so pack a small umbrella or rain jacket. Waterproof shoes or sandals help a lot.
Air quality can shift, especially on muggy days when fine dust hangs around. Checking forecasts helps you plan. Sometimes, mornings and evenings cool off enough for a nice walk by the Han River.
Popular Summer Festivals and Events
Even with the heat, Seoul throws some of its most exciting festivals in summer.
- Waterbomb Festival: Massive water fights with live music—super popular with younger crowds trying to cool off.
- Seoul Jazz Festival: Starts in late spring, but some shows spill into summer, attracting both local and international artists.
- Hangang Summer Festival: Events along the Han River, like outdoor movies, night markets, and water sports.
Shopping areas like Myeongdong also extend hours and roll out summer sales. The city stays lively, and you’ll get a unique taste of Seoul’s culture.
Winter in Seoul: Cold Temperatures and Budget Travel
Winter in Seoul feels cold, dry, and a bit quieter. Sure, the chill can be tough, but it’s a good time for budget travel, special events, and outdoor activities that show off Seoul’s winter charm.
When Is Winter in Seoul
Winter usually covers December through February. Temperatures often sink below freezing, especially in January, which is the coldest month.
Daytime highs range from -2°C to 5°C (28°F to 41°F), and nights can drop below -5°C (23°F).
The air stays dry, and strong winds make it feel even colder. Snow falls now and then, but it’s not constant. You might see palaces and streets dusted in white, which looks nice but means you’ll need warm clothes.
Watch out for icy sidewalks. Bring insulated jackets, gloves, and scarves. Seoul’s indoor heating is strong, so wearing layers works best.
Even if the cold feels harsh, clear skies and crisp air can make winter days surprisingly bright and good for sightseeing.
Winter Festivals and Seasonal Activities
Winter in Seoul isn’t just about cold weather. Locals and visitors celebrate Seollal, the Korean Lunar New Year, usually in late January or early February.
During Seollal, you’ll catch traditional performances, visit palaces hosting cultural programs, and maybe even see families paying respects to their ancestors.
The Seoul Lantern Festival pops up in November and sometimes stretches into early winter. When December rolls around, Christmas lights fill shopping districts like Myeongdong and Dongdaemun with color.
Seasonal markets pop up too, selling roasted chestnuts and hotteok (those sweet, chewy pancakes you’ll want to try).
People love getting outside despite the chill. You can lace up your skates at outdoor rinks in Seoul Plaza or Olympic Park.
If you’re more into skiing or snowboarding, several resorts sit just a short drive from the city. These trips let you escape the city and see Korea’s snowy landscapes up close.
Cheapest Time to Visit Seoul
If you’re traveling on a budget, winter is honestly the least expensive season in Seoul. Hotel rates drop compared to spring and fall, and you’ll usually find cheaper airfare outside the holiday rush.
January and February tend to have the best deals. Tourist attractions clear out, so you can breeze through palaces, museums, and shopping areas without long lines.
Restaurants and markets stay lively, but you won’t have to deal with the big tourist crowds.
You’ll save money, but don’t forget you might spend more on heating and winter clothes. Still, if you don’t mind the cold, winter gives you real savings and a quieter way to experience one of Asia’s busiest cities.
Travel Tips for Choosing the Best Time to Visit
Seoul’s weather changes a lot from season to season, so when you go really affects your trip. Costs, crowds, and flights all shift through the year, so timing matters more than you might think.
Best Times to Visit Seoul for Weather
Spring (April–May) and autumn (September–October) are honestly the most comfortable months. Temperatures usually sit between 15°C and 25°C (59°F–77°F), with clear skies and low humidity.
These months are great for wandering neighborhoods, exploring palaces, or hiking in mountains like Bukhansan.
In spring, cherry blossoms cover parks like Yeouido Hangang Park. In autumn, Seoul’s tree-lined streets and hills turn bright red, orange, and yellow.
Both seasons bring less rain than summer, so it’s easier to stick to outdoor plans.
Winter (December–February) gets cold, often below freezing, but it stays dry and crowds thin out. If you like crisp air, festive lights, or ski trips, winter can be surprisingly rewarding.
Summer (July–August) is a different story—it’s hot, humid, and rainy, so sightseeing gets uncomfortable fast.
Avoiding Crowds and High Prices
Tourism spikes during summer and big Korean holidays like Seollal (Lunar New Year) and Chuseok (Harvest Festival). Hotels charge more, transport gets packed, and lines at attractions get long.
If you want to dodge all that, plan your trip outside those busy times.
Spring and autumn don’t just have the best weather—they also bring crowds that are easier to handle than summer’s.
You’ll still see more people during cherry blossom season in April and peak fall colors in late October, but it’s not overwhelming.
Winter usually stays the quietest. Hotels and guesthouses often cut prices, and you’ll get into museums and palaces with barely any wait.
Just remember, the cold might limit some outdoor activities.
Booking Flights and Accommodation
Flight prices to Seoul jump around depending on the season. Korean Air, Asiana Airlines, and other international carriers usually bump up fares during the summer and holidays. If you book at least 2 or 3 months ahead, you’ll probably snag a better deal, especially for nonstop flights.
Spring and autumn flights fill up fast thanks to festivals and that perfect weather. If you don’t mind, try flying midweek—fares tend to drop a bit then.
When it comes to accommodation, a lot of hotels in central spots like Myeongdong or Hongdae throw out discounts in winter. But in spring and autumn, you’ll want to book earlier, especially if you’re aiming for places near parks or cultural hotspots.
Booking platforms that offer free cancellation help if you’re not totally sure about your plans.