South Korea in July: Weather, Crowds & What to Expect
Climate Map for July
Average temperature across South Korea in July.
City Weather in July
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Seoul | 28° | 21° | 329 mm | high | Warm |
| Busan | 28° | 22° | 254 mm | very high | Warm |
| Incheon | 28° | 22° | 272 mm | high | Warm |
| Daegu | 30° | 22° | 229 mm | very high | Warm |
| Daejeon | 30° | 21° | 307 mm | high | Warm |
| Gwangju | 30° | 22° | 282 mm | very high | Warm |
| Suwon | 28° | 21° | 336 mm | high | Warm |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Seoul & Northwest (Gyeonggi, Incheon, Yellow Sea coast)
July is typically the wettest month as the jangma (monsoon) settles in; persistent heavy rains and occasional floods can disrupt low-lying streets in Seoul and the western provinces. Air and river levels rise, and some mountain trails close from erosion risk - avoid slippery routes on Bukhansan. Scene-stealing indoor activities - galleries, palaces with covered areas or Korean spa jjimjilbangs - become comfortable refuges; carry a sturdy umbrella and quick-dry clothing.
Gangwon Province & the Taebaek Mountains (Sokcho, Pyeongchang, Seoraksan)
July is in the thick of the rainy season, with persistent, sometimes heavy rain lowering visibility in the mountains and swelling streams that can make some trails unsafe. Ski resorts are quiet, but coastal festivals and beaches attract locals between showers; surf at Jumunjin can be rough. Always check local trail conditions before setting out - river crossings and cliff paths can become hazardous after prolonged rain.
Central Korea (Chungcheong, Daejeon, Cheongju, Boryeong)
July is wet and warm during the thick of the monsoon, with heavy downpours that can clear highways and delay trains. Agricultural landscapes turn lush but muddy; some smaller rural roads may be waterlogged. If you’re attending events like the Boryeong Mud Festival (usually in July), be prepared for crowds, heat between showers, and the need for quick-dry clothing.
Yeongnam / Southeast (Busan, Daegu, Ulsan, Gyeongsang)
July is peak monsoon season with frequent heavy rains and thunderstorms, and the southeast is not immune - Busan and Ulsan may see intense but episodic downpours. Typhoon activity later in the month can bring higher seas and strong winds, disrupting ferries and coastal excursions. Opt for museums, seafood markets and indoor cultural venues on rainy days, and keep flexible plans for islands and coastal treks.
Jeolla & Southwest (Gwangju, Mokpo, Suncheon, Boseong)
July sits squarely in the monsoon, with frequent long spells of rain and high humidity that make outdoor exploration sticky and challenging. Summer festivals continue, but expect wet conditions and potential localized flooding in low-lying coastal areas. Heat and humidity may make beach days less pleasant on gray, rainy stretches - quick-drying clothing and flexible plans help reduce frustration.
Jeju Island (Hallasan, Seogwipo, Jeju City, Udo)
July is hot, humid and often wet during the peak of the monsoon; this is also a time when typhoons can start to influence the island, bringing intense winds and storm surge risk. Beaches are busy on calmer days, but cliff walks and remote trails can be unsafe during strong winds. Prioritize inner-island drives and indoor cultural sites during prolonged rain, and keep an eye on official advisories.