Weather in Seoul in August
August in Seoul is a hot month. Plan the serious walking for morning. The rest of the day wants shade and a slower pace.
In South Korea, this is how Seoul actually wears August, not how a country centroid would. August is the peak of the warm side of the year in Seoul. If you wanted the gentlest heat, this is not that month.
- Average temp
- 27°C
23–30°C
- Rainfall
- 390 mm
A wet month
- Sunshine
- 4.7 h
hours per day
What to expect
Daytime
Hot days in Seoul. Ruins, markets and hills are a morning job. Midday sightseeing is how people remember August for the wrong reason.
Nights stay warm. Air-con, if you can get it, is part of the brief. A jumper for August in Seoul is almost always a waste of bag space.
Rain
August is the wet side of the year in Seoul. Days can be heavy. Plans that cannot survive rain are the wrong plans.
This is not a reason to skip Seoul if you like the place. It is a reason to pack for weather and to stop treating every grey hour as a failed holiday.
Evening
Evenings stay warm.
What to pack
Sun protection
Rain jacket
Where to stay in Seoul
Dates are a starting point for August.
Travel guides for Seoul
What to read before you book.
Average weather in Seoul
TemperatureRainfall
Similar weather in August
Other destinations whose August averages sit close to this one.
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FAQs about Seoul
Climate averages for Seoul, 1991–2020.
The best time to visit Seoul is between April and June, the most comfortable stretch of the year on these averages.
August is the hottest month, with an average around 27°C.
July is the wettest month, with about 422 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
