The weather in South Korea in August is very hot. The average temperatures are between 24°C and 29°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of August in South Korea. 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 South Korea in August 2025.
If you’re planning to visit South Korea in the near future, we highly recommend that you review the 14 day weather forecast for South Korea before you arrive.