Open Travel Guide
Weather in South Korea

South Korea Weather & Climate Guide 2026

Month-by-month weather, best times to visit, and what to pack for South Korea.

South Korea blends ancient traditions with state-of-the-art modernity, offering visitors a unique experience from Seoul's neon-lit streets to tranquil Buddhist temples. Discover K-pop culture, UNESCO World Heritage sites, world-class cuisine, and stunning natural landscapes from volcanic islands to mountain ranges.

South Korea has a continental climate with four distinct seasons. Summers are hot and humid with a monsoon season (jangma) from late June to late July bringing heavy rainfall. Winters are cold and dry with snowfall particularly in the northeast and mountains. Spring and autumn are the most pleasant seasons with mild temperatures, clear skies, and spectacular natural scenery — cherry blossoms in spring and vibrant foliage in autumn attract millions of visitors.

Best time to visit

Recommendation

Best: April-June, September-November

Peak Season: April-June, September-November

Shoulder Season: March, December

Avoid: July-August (monsoon), January-February (cold)

Best Reason:

Avoid Reason:

Month-by-month weather

Typical conditions throughout the year.

January

-2°C/28°F

Coldest month, dry and clear. Ski season peak at Pyeongchang resorts. Very quiet tourist season.

February

1°C/34°F

Still cold but days gradually lengthening. Lunar New Year (Seollal) brings family travel. Ski season continues.

March

7°C/45°F

Early spring with occasional warmth. First cherry blossoms on Jeju Island. Yellow dust (hwangsa) season begins.

April

14°C/57°F

Cherry blossom peak in Seoul and mainland Korea. Spectacular spring flowers. Peak tourist crowds. Book ahead.

May

19°C/66°F

Warm, green, and perfect for sightseeing. Azalea mountains bloom. Buddha's Birthday Lotus Lantern Festival.

June

24°C/75°F

Warm and pleasant before monsoon starts late June. Good for travel in first half of month.

July

27°C/81°F

Monsoon season (jangma) with heavy rainfall and high humidity. Beaches popular despite rain. Boryeong Mud Festival.

August

28°C/82°F

Hottest month. Post-monsoon mostly dry. Peak beach season at Haeundae and Jeju. Very crowded coastlines.

September

22°C/72°F

Excellent weather — warm days and cool nights. Chuseok harvest festival. Autumn foliage begins in northern mountains.

October

15°C/59°F

Peak autumn foliage especially at Seoraksan and Naejangsan. Perfect hiking weather. Busan Film Festival. Highly recommended.

November

7°C/45°F

Cooling rapidly, late foliage in southern regions. Seoul Lantern Festival on Cheonggyecheon Stream. Quieter crowds.

December

1°C/34°F

Cold with festive Christmas atmosphere. Christmas markets and illumination events. Ski resorts open. Low tourist numbers.

The seasons

What to expect in each part of the year.

Season

Spring

Months: March-May

Korea's most beloved season with cherry blossoms (late March to mid-April), azalea mountains, and mild temperatures perfect for sightseeing. Peak domestic and international tourism season.

Season

Summer

Months: June-August

Hot and humid with monsoon rains from late June to late July (jangma). Post-monsoon August is hot but drier. Beach season at Haeundae and Jeju Island. Outdoor festivals abound.

Season

Fall

Months: September-November

Korea's second peak season with spectacular autumn foliage (mid-October peak), pleasant temperatures, and clear skies. Festival season including Busan Film Festival and Seoul Fireworks.

Season

Winter

Months: December-February

Cold and dry with significant snowfall at higher elevations and the northeast (Gangwon Province). Seoul winters are cold (around 0°C) but manageable. Ski resorts at Pyeongchang and Yongpyong open.

Crowds & peak times

When to expect tourists and when to avoid them.

High Season
April (cherry blossom), October (autumn foliage), and August (beach season)
Shoulder Season
May, September, and December (Christmas markets)
Low Season
January-February and July (monsoon)

Major events & festivals

Time your visit around what matters.

Event

Cherry Blossom Season

Cherry blossoms bloom across Korea with festivals in Seoul (Yeouido, Seokchon Lake), Busan, and Jeju. Peak season for domestic tourism.

Event

Boryeong Mud Festival

World-famous beach festival on west coast featuring mud wrestling, slides, and parties. Huge international attendance.

Event

Busan International Film Festival

Asia's largest film festival showcasing international and Korean cinema. Red carpet events and screenings throughout Busan.

Event

Seoul Lantern Festival

Cheonggyecheon Stream illuminated with elaborate lantern displays. Free event featuring traditional and modern lantern art.

Event

Buddha's Birthday Celebration

Temples nationwide decorated with colorful lanterns. Free admission to palaces and temples. Jogyesa Temple main celebration.

Event

Jeju Fire Festival

Traditional festival burning Saebyeol Oreum field to promote grassland health. Spectacular nighttime fire ceremony with performances.

Event

Seoul Fireworks Festival

International fireworks competition along Han River. Hundreds of thousands gather for spectacular displays from multiple countries.

Event

Boseong Green Tea Festival

Tea plantation festival with tea picking, traditional performances, and green tea products in Korea's tea capital.

Event

Andong Mask Dance Festival

Traditional mask dance performances and workshops in historic Andong. Showcases Korean folk culture and international mask traditions.

Event

Seoul Fashion Week

Korea's premier fashion event showcasing Korean and international designers. DDP main venue with shows and exhibitions.

Event

Gwangju Biennale

Major contemporary art exhibition featuring international artists. One of Asia's most prestigious art biennales.

Event

Jinju Namgang Yudeung Festival

Beautiful lantern festival on Namgang River commemorating historic battle. Thousands of lanterns float on river creating magical atmosphere.