The month in detail
What to expect in August
In the height of summer, Seoul sees high temperatures (30°C). Heat is a factor for outdoor activities. Expect rain on 38% of days — a light raincoat in the bag is recommended.
August ranks 7 out of 12 months in Seoul. Compared to July: 5 pts fewer rainy days, +1.0h of sun per day.
This month's conditions
What it's like in August
UV index
7 · high
sunscreen and hat advised
Feels like
very humid
22°
Sea
28°C
warm, ideal
Daylight
13.5h of daylight
Air quality
poor
AQI 62
Compare
Is August the right month?
The best month in Seoul is June (8.3/10), 3.2 pts higher than August.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Seoul
Expedia →
Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
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🎟️ Activities & tours · Seoul
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · South Korea
🗣️LanguageKorean
💶CurrencySouth Korean Won (₩)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthAugust · 30°C
❄️Coolest monthJanuary · 2°C
🌧️Rainiest month ⓘJuly · 43%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore
Other destinations in August
If August doesn't convince you for this destination, compare with others.
Location
Where is Seoul ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
South KoreaTemperate oceanic climate with a 8.3 → 4.1 gap between best and worst month. 10 years of ERA5 data to choose by project.
37.57°N · 126.98°E
Questions
Frequently asked questions
What is the best time to visit Seoul?
June is the best month with 27.0°C highs, 18.0°C lows, 6.3h of sunshine and 25.0% rainy days. The months of June & May offer comparable conditions.
How many hours of sunshine does Seoul get in June?
Seoul averages 6.3 sunshine hours per day in June. It is the sunniest month with a climate score of 7.8/10.
What is the rainiest month in Seoul?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Seoul in June?
In June, overnight lows reach 18.0°C, while afternoon highs average 27.0°C.
Is Seoul good in winter?
In winter (December-February), Seoul scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 7.8/10.
When should you avoid Seoul?
January is the most difficult month to visit Seoul, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Seoul in August?
In August, the sea averages 28°C in Seoul: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Seoul in August?
The average UV index reaches 7 in August in Seoul (high), with about 13.5h of daylight. Sunscreen and hat advised.