Korea in summer: monsoon season, heat, typhoons, beaches and what to pack

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Summer in Korea is hot, humid and lively. Beaches fill up, rivers become the city's living room and cafés compete over bingsu. It is also the rainiest time of year, so a summer trip goes best when you plan around the weather rather than against it.

Jangma: the monsoon season

Jangma (장마) is the summer rainy season. It usually begins in late June, starting in Jeju and the south and reaching the central region, including Seoul, a few days later. It generally ends in late July. The exact dates vary a great deal from year to year, and the Korea Meteorological Administration announces the start and end for each region separately. Monsoon rain is not constant. You get days of heavy downpours, then breaks of sticky sunshine. A few practical points:

Short, intense bursts can flood underpasses and low roads. Follow official warnings and stay out of streams and valleys during heavy rain.
Hiking trails and riverside parks may close after storms.
Plan indoor options for each day: museums, markets, cafés, a jjimjilbang.

The heat

After the monsoon ends comes the hottest stretch, usually from late July into August. Daytime highs in the low to mid thirties are common, and humidity makes it feel worse. Nights stay warm too.

Drink water often; convenience stores sell it chilled everywhere.
Plan walking for the morning and evening, and spend the middle of the day indoors.
Subways, malls, underground shopping arcades and cafés are strongly air-conditioned. Carry a thin layer for the chill.
Many districts set up shade canopies at crossings and cooling shelters in summer.
Heat wave warnings are issued in Korean and through official alert apps such as the Emergency Ready App, which works in English.

Typhoons

Typhoon season runs through summer into early autumn, with August and September the most likely months for a storm to reach Korea. Most pass with a day or two of disruption, but flights, ferries to Jeju and other islands, and coastal attractions can be cancelled. Keep your plans flexible if you travel in late summer, and check the forecast before any boat trip.

Beaches

Haeundae in Busan is Korea's most famous beach: wide, urban and very busy in peak season. Gwangalli nearby has the bridge view. Our Busan guide has more.
Gangneung and the east coast have clearer water and pine forest behind the sand, and the KTX from Seoul makes them easy to reach. See our Gangneung guide.
Jeju has beaches with pale sand and turquoise water.
Lifeguarded beaches open officially for a summer season, and swimming is restricted outside set hours and areas. Check each beach's dates before you go.

Festivals and summer fun

Summer brings beach festivals, river events in Seoul, outdoor music festivals and night markets, plus water fights and mud festivals in some regions. Dates and programmes change each year, so check the Visit Korea site or the city's own page for the current calendar. Along the Han River, evening picnics with fried chicken are a summer ritual in themselves.

Eating for the heat

Koreans fight heat with heat as well as ice. Samgyetang (ginseng chicken soup) is the traditional dish for the hottest days, while naengmyeon (cold noodles), kongguksu (cold soybean noodle soup) and bingsu cool you down.

What to pack

Light, breathable clothes that dry quickly, and a spare shirt for long days
A compact umbrella that also works as a sunshade
Sandals or shoes that can get wet
Sunscreen, a hat and sunglasses
A thin cardigan for air-conditioning
A small towel or handkerchief; many Koreans carry one in summer
A portable fan, which you can also buy cheaply when you arrive

Have you travelled through a Korean monsoon or a heat wave? Share your tips, or ask about your dates, in the comments.