Seoul Weather in August
What's the weather like in Seoul (Seoul) in August 2025?
The climate in Seoul during August can be summarized as hot, humid and very wet.
August is in the summer in Seoul and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 29°C (85°F), whilst at night 22°C (71°F) is normal.
| Daytime temperature | 29.4°C 84.9°F |
|---|---|
| Nightly temperature | 21.8°C 71.2°F |
| Average temperature | 25.6°C 78.1°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 289 mm 11.4 ins |
| Rainy days | 13 days |
| Sea temperature | 25.3°C 77.6°F |
| Humidity | 80% |
| Windspeed | 6.8kph 4 mph |
On average August is the 2nd wettest month of the year in Seoul with around 289mm 11.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
August temperatures in Seoul
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Seoul in August 2025.
Other monthly averages
Best places to visit in August
Seoul weather stats
| Hottest month: | August | 29.2°C 84.6°F |
|---|---|---|
| Driest month: | December | 21mm 0.8ins |
| Sunniest month: | October | 7.3hrs |
| Coldest month: | January | 0.9°C 33.6°F |
| Wettest month: | July | 358mm 14.1ins |
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