The weather in Seoul in August is very hot. The average temperatures are between 75°F and 84°F, drinking water regularly is advisable.
You can expect rain for roughly half of the month of August in Seoul. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Seoul in August 2025.
If you’re planning to visit Seoul in the near future, we highly recommend that you review the 14 day weather forecast for Seoul before you arrive.
Temperatures
84° / 75°
Rainy Days
10
Snowy Days
0
Dry Days
21
Rainfall
12.8
in
Sun Hours
9.9
Hrs
