Weather
Fall in South Korea begins in September, bringing cooler temperatures and a gradual end to the rainy season. With an average temperature of 66°F (19°C), the oppressive summer heat of August has receded, replaced by balmy weather perfect for city exploration and outdoor activities. Daytime highs can reach the mid-70s (Fahrenheit), while temperatures cool to the high 50s and low 60s once the sun sets. Visitors in September should pack mostly warm weather clothes, with a light jacket for the evening.
At the start of the month, expect some residual rainy days. The chance of precipitation declines throughout the month, along with the humidity, which remains moderately high, with an average of 70%. Days begin to shorten, but with an average of six hours of daily sunshine, there is still plenty of daylight for sightseeing, perfect for admiring the changing leaves toward the end of September. However, visitors wishing to see fall foliage should delay their trip until October for the best autumnal views.
Crowds & Costs
September is an ideal month to travel to South Korea as the crowds lessen after the summer rush ends and children return to school. There is a significant drop in inbound visitors from August to September, with tourism spiking again in October for peak fall foliage peeping season. Travelers this month can take advantage of this temporary lull to visit many of the country's top sights without experiencing high crowds and long queues. Additionally, it may be possible to find deals on airfare and accommodations before tourism picks up again in October.
Chat with a local specialist who can help organize your trip.
Where to Go
Take a few days to explore the Seoul Capital Area. The city of Incheon boasts several outstanding parks, like Songdo Central Park. Alternatively, head out of doors to explore Seoul. Visit Changdeokgung Palace, Gyeongbokgung Palace, the Bukchon Hanok Village, and YTN Seoul Tower for views over the city and wander nearby Namsan Hanok Village. Pick up traditional souvenirs and pop into a teahouse in Insadong and do a little retail therapy in Myeongdong, Cheongdam, and Gangnam. For a day trip from the capital, take a 30-minute train to Suwon, where you can visit a sprawling UNESCO-protected 18th-century fortress.
Travelers with more time can explore other major cities and top tourist sites. In the east, visit the markets and museums of Daegu or the beaches of Busan, now without the trademark summer throngs of people. In the west, Jeonju offers a glimpse into South Korea's storied past with its cultural and historical sites, including a hanok village featuring more than 800 traditional Korean homes. Visitors can rent a car for a cross-country road trip or use South Korea's extensive public transportation system, including buses and trains that run to most destinations.
What to Do
September offers something for every traveler. First-time visitors can take advantage of fewer crowds to visit top attractions across the country, from Hwaseong Fortress in Suwon to Jeonju's hanok village. For outdoorsy travelers, fall (along with spring) is the best time of year for hiking and camping. While the fall foliage has not yet peaked, the pleasant weather makes national parks and other top hiking spots popular this month. Bukhansan National Park is perfect for a day trip from Seoul, while Jirisan National Park can be combined with nearby Jeonju.
Visitors should avoid traveling to major cities during the Chuseok harvest festival, as most Koreans return to their hometowns and many shops and tourist attractions close. The date for the three-day national holiday varies based on the lunar calendar but typically takes place in September.
Events in September
Chuseok, nationwide. During this three-day national holiday, Koreans travel home to spend time with family and give thanks for the autumn harvest.
International Fireworks Festival, Pohang. The skies of Pohang come alive during this September festival as companies from across the world compete to put on the most spectacular fireworks display.
Muju Firefly Festival, Muju. This ecotourism festival at the end of August and/or the beginning of September celebrates South Korea's fireflies, which feed on marsh snails native to Muju.
Hyoseok Cultural Festival, Bongpyeong. Snap a photo amid a field of buckwheat flowers at this early September festival honoring Korean author Lee Hyoseok and his novel "When Buckwheat Flowers Bloom."
More Helpful Information
South Korea in August
South Korea in October
Best Time of Year to Visit South Korea
How Many Days to Spend in South Korea