L'Heure du Voyage
Gyeongbokgung Palace in Seoul with skyscrapers in the background, South Korea

Traveler's calendar

When to go to South Korea?

The best time to visit South Korea is late September to mid-November: dry skies, 15-22ยฐC and blazing autumn foliage. Spring, from late March to May, rivals it thanks to the cherry blossoms. Summer is hot, humid and marked by the July monsoon (jangma) and the August-September typhoons. Winter is cold and dry, ideal for skiing. Here is the breakdown, month by month and region by region.

At a glance

๐ŸŸข Best window
Late Sept-mid-Nov
๐ŸŒธ Cherry blossoms
Late March-mid-April
๐ŸŒง๏ธ Monsoon (jangma)
Late June-July
๐Ÿ”ด Avoid
July-August
๐ŸŒก๏ธ Hottest
August (up to 30ยฐC)
โ„๏ธ Coldest
January (-5ยฐC in Seoul)

The essentials

When to go to South Korea, in brief

๐ŸŸข

Late September to mid-November: the sweet spot

Dry air, 15-22ยฐC, low rainfall and red-and-gold foliage everywhere. The most beautiful season, mild and luminous.

๐ŸŒธ

Cherry blossom spring

Bloom from late March (Jeju, Busan) to early April (Seoul). The south flowers first. The Jinhae festival runs late March to early April.

๐ŸŒง๏ธ

The summer monsoon (jangma)

From late June to late July, most of the year's rain falls. Seoul can receive over 400 mm in July alone.

๐ŸŒ€

Late-season typhoons

Typhoon risk runs July to September, mostly on the South and Jeju. On average one passes near the country each year.

โ„๏ธ

Cold, dry winter

Seoul drops to around -5ยฐC in January, with frequent snow. Dry and sunny, it is the season for skiing and snow-dusted palaces.

๐ŸŽŽ

Festivals to plan around

Jinhae cherry blossoms (April), Boryeong Mud Festival (July), Busan Fireworks (autumn) and the Seoul Lantern Festival (November).

The verdict

The best periods

Ideal

Late Sept - mid-Nov

Dry, mild and luminous. The prime window for Seoul, palaces, temples and hikes among the foliage. Book 2 to 3 months ahead.

Fair

Late March - June

Cherry blossoms late March to April, mild spring in May. June stays pleasant before the monsoon, with heat building.

Avoid

July - August

Monsoon in July, heavy humid heat in August, typhoon risk. Intense rain and overcast skies.

Month by month

The full calendar

Tap a month for the detailed guide: weather by region, where to go, festivals.

Ideal Fair Avoid
January

-6 to 2ยฐC

Cold, dry, snow, ski

February

-4 to 4ยฐC

Cold, dry, Seollal

March

2 to 11ยฐC

Spring, late-month bloom

April

8 to 18ยฐC

Cherry blossoms, mild

May

14 to 23ยฐC

Mild, dry, luminous

June

18 to 27ยฐC

Hot, first rains

July

22 to 29ยฐC

Monsoon (jangma)

August

23 to 30ยฐC

Hot, humid, typhoons

September

18 to 27ยฐC

Heat eases, typhoon risk

October

10 to 21ยฐC

Foliage, dry

November

3 to 13ยฐC

Foliage, crisp and dry

December

-3 to 5ยฐC

Cold, dry, winter

Climate

Climate by region

Climate by region
RegionDry seasonWet seasonVerdict
Seoul & Central Apr-May and Oct-Nov: mild, dry Jul: monsoon (400 mm+); Dec-Feb: cold dry, snow Ideal Apr-May & Oct-Nov
Busan & southeast coast 2-3ยฐC warmer than Seoul, mild winters Jul-Sept: rain and typhoons; pleasant summer sea Ideal May-June & Sept-Oct
Jeju Island The warmest, near-subtropical climate Very wet May-Oct (up to 300 mm+/month) Ideal Apr-May & Oct-Nov
Mountains (Seoraksan, Gangwon) Cooler, early foliage in October Dec-Feb: heavy snow (ski resorts) Ideal Oct (foliage) & Dec-Feb (ski)

Calendar

The key events of the year

๐ŸŽŽ 17-19 February 2026

Seollal (Lunar New Year)

One of the country's biggest family holidays. Cities empty out as millions of Koreans return to their hometowns. Many shops close.

๐Ÿ‡ฐ๐Ÿ‡ท Nationwide

๐ŸŒธ Late March - early April

Jinhae Cherry Blossom Festival

Korea's cherry blossom capital: over 350,000 trees in bloom along streets and canals, near Busan.

๐Ÿ‡ฐ๐Ÿ‡ท Jinhae (Changwon)

๐ŸŸค Mid-July

Boryeong Mud Festival

One of the biggest summer festivals: mud baths, slides and concerts on Daecheon Beach, 2.5 hours from Seoul.

๐Ÿ‡ฐ๐Ÿ‡ท Boryeong

๐ŸŽ† Autumn (October-November)

Busan Fireworks Festival

Over a million spectators on Gwangalli Beach for a pyrotechnic show synchronized with music and lasers.

๐Ÿ‡ฐ๐Ÿ‡ท Busan

๐Ÿฎ November

Seoul Lantern Festival

Hundreds of lanterns light up the Cheonggyecheon Stream in the heart of the city, in the thick of foliage season.

๐Ÿ‡ฐ๐Ÿ‡ท Seoul

Our analysis

South Korea reads to the rhythm of its four distinct seasons. Two windows stand out clearly: autumn, from late September to mid-November, and the cherry blossom spring, from late March to April. In between, summer calls for patience and winter for warm clothes.

Autumn, from late September to mid-November

This is the prime window. The air turns dry, temperatures soften (15 to 22ยฐC by day) and the foliage sets the country ablaze in red, orange and gold. The colors start at altitude, in the Seoraksan and Gangwon ranges from early October, then descend toward Seoul and the south through mid-November. It is the ideal time to combine palaces, temples, hikes and cities under a beautiful light. Book two to three months ahead for peak weekends.

Cherry blossom spring

From April to May, the country comes back to life. The cherry blossom bloom begins in late March in the south (Jeju, Busan) and reaches Seoul in early April. The Jinhae festival, near Busan, is one of the most spectacular, with its hundreds of thousands of trees in bloom. May extends the season with a mild, dry climate, perfect for exploring without the cherry-blossom crowds.

Summer: monsoon and typhoons

From late June the jangma sets in, the Korean monsoon, which concentrates most of the yearโ€™s rain through late July. Seoul can receive over 400 mm in July alone. August stays hot and heavy (up to 30ยฐC), with a typhoon risk that runs into September, mostly on the South and Jeju Island. It is the hardest stretch for a first trip.

Winter, cold but dry

From December to February, the mercury drops to around -5ยฐC in Seoul in January, with regular snowfall. The climate stays dry and often sunny. It is the season for skiing in the Gangwon resorts, snow-dusted palaces and winter markets. Busan, on the southeast coast, and Jeju, almost subtropical, stay much milder: good options to escape the deep cold of the center.

FAQ

Frequently asked questions

When is the best time to visit South Korea? +

From late September to mid-November: dry skies, 15-22ยฐC, low rainfall and blazing autumn foliage. It is the prime window, just ahead of cherry blossom spring.

What is the worst time to visit South Korea? +

July and August: the monsoon (jangma) concentrates most of the rain in July, the air turns heavy and humid in August, with a typhoon risk. It is also the hottest stretch.

When can you see the cherry blossoms in South Korea? +

From late March to mid-April. The south flowers first: Jeju and Busan from late March, Seoul in early April. The Jinhae festival, near Busan, runs late March to early April.

When can you see the autumn foliage? +

From October to mid-November. The colors start in the mountains (Seoraksan, Gangwon) in early October, then move down to Seoul and the south through mid-November.

Can you visit South Korea in winter? +

Yes. Winter is cold (around -5ยฐC in Seoul in January) but dry and often sunny. It is the season for skiing, snow-dusted palaces and a wintry atmosphere, as long as you wrap up well.

When is Seollal in 2026? +

From 17 to 19 February 2026. It is the Lunar New Year, one of the country's biggest holidays. Transport is packed and many shops close for a few days.

Do you need to book far ahead? +

For autumn (October-November) and cherry blossom season (April), yes: book flights and hotels two to three months ahead, especially around peak-bloom weekends and foliage peaks.

Marie Laurent ยท Southeast Asia specialist

Updated June 22, 2026

Go further

Plan your trip to South Korea