Month by month

South Korea in August

Monsoon influence can continue into early August, followed by hot and humid late-summer conditions. Coastal and island areas are busy with domestic tourism despite the heat.

SeasonLow Season Temperature 22 to 31°C (72 to 88°F) Crowds Low Prices Low
High season Shoulder Low season

Weather by City in August

CityLow / highRain
  • Busan Warm 23° 29° 239 mm
  • Incheon Warm 22° 29° 262 mm
  • Daegu Warm 22° 31° 213 mm
  • Daejeon Warm 21° 30° 283 mm
  • Gwangju Warm 22° 31° 266 mm
  • Suwon Warm 21° 29° 293 mm
  • Ulsan Warm 22° 30° 209 mm

Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.

Temperature map

South Korea average temperature in August
-30°-20°-10°0°10°20°30°40°

Average temperature across South Korea in August.

Where to Go in South Korea in August

Seoul & Northwest

Gyeonggi, Incheon, Yellow Sea coast

August often remains hot and humid, though the monsoon eases and typhoon influences can bring episodic heavy rain and gusty winds, especially later in the month. Urban heat islands make Seoul evenings muggy; rooftop bars fill after sunset, but daytime walking can be tiring. If you plan river cruises on the Han or day trips to the Yellow Sea islands, keep an eye on weather advisories - ferry service may be canceled on rough days.

Gangwon Province & the Taebaek Mountains

Sokcho, Pyeongchang, Seoraksan

August tends to be muggy and warm at sea level but remains noticeably cooler than the southern mainland, especially overnight in alpine valleys. Typhoon presence is possible and can drive strong winds and torrential rain that affect ferry schedules and mountain access. If your priority is hiking, aim for early mornings and mid-September as a backup in case storms disrupt plans.

Central Korea

Chungcheong, Daejeon, Cheongju, Boryeong

August continues humid and hot, though intense storms and occasional typhoon remnants can produce abrupt flooding and strong winds, affecting ferry schedules and coastal plans. Central cities can feel stifling in the afternoons but often cool at night with air conditioning common in public spaces. Plan indoor alternatives during heat spikes and consult local weather bulletins before traveling to low-lying rural areas.

Yeongnam / Southeast

Busan, Daegu, Ulsan, Gyeongsang

August remains hot and humid; however, Busan’s sea breezes can make the heat more tolerable than in inland Daegu, where temperatures frequently peak highest on the peninsula. Haeundae and Gwangalli beaches are crowded, and evening promenades are lively. If you plan coastal or island visits, check ferry timetables and pack lightweight, breathable clothing and sunscreen for daytime activity.

Jeolla & Southwest

Gwangju, Mokpo, Suncheon, Boseong

August is hot, humid and still susceptible to typhoon impacts; strong winds and heavy rain can suddenly close coastal roads and interrupt ferry services. Many Koreans travel to coastal resorts in August, so where beaches are accessible they are busy on clearer days. Travelers should monitor forecasts closely, avoid exposed coastal drives during storms and pack a lightweight, waterproof jacket.

Jeju Island

Hallasan, Seogwipo, Jeju City, Udo

August remains warm and is the busiest month for domestic tourists, with beaches and coastal attractions crowded when the weather permits. Typhoon season is a real possibility and can bring abrupt travel disruption, so maintain flexibility and consider travel insurance. Lightweight, breathable clothing and a rain jacket are essential; reserve ferry or tour slots well in advance for weekend travel.

Events & Festivals in August

There are no major festivals or events in South Korea during August to be aware of.

Planning a trip to South Korea?

See how August compares with the rest of the year, then read the full guide.