South Korea weather in September
What is the weather like in South Korea in September?
The weather conditions in South Korea in September vary from unpleasant to pleasant depending on the destination.
During September in South Korea the average maximum daytime temperatures are high and range from 23°C (74°F) in Gangneung to 28°C (82°F) in Gwangju.
Precipitation in September varies from high in Ganghwa with an average of 121mm (4.75 inches) of rainfall to heavy in Gangneung with 203mm (8 inches).
It is also generally a
moderately sunny
time of year with an average of 182 hours of sunshine in Seoul during the entire month.
To learn more about the weather conditions in specific areas of South Korea, check out the map below.
Where to go in South Korea in September
perfect weather
pleasant
tolerable
unpleasant
poor
Popular destinations in South Korea
What is the weather like in September for the 5 most popular destinations in South Korea?
Average weather in Seoul
In September Seoul generally has high temperatures with maximum daytime temperatures around 27°C (80°F), minimum nighttime temperatures around 17°C (62°F) and high monthly rainfall. So on average the conditions are pleasant that month.
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Average weather in Busan
In September Busan generally has high temperatures with maximum daytime temperatures around 26°C (80°F), minimum nighttime temperatures around 21°C (69°F) and heavy monthly rainfall. So on average the conditions are pleasant that month.
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Average weather in Jeju
In September Jeju generally has high temperatures with maximum daytime temperatures around 26°C (78°F), minimum nighttime temperatures around 22°C (71°F) and heavy monthly rainfall. So on average the conditions are pleasant that month.
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Average weather in Seogwipo
In September Seogwipo generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.
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Average weather in Incheon
In September Incheon generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 19°C (65°F) and high monthly rainfall. So on average the conditions are pleasant that month.
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Is your destination not in the list? Have a look at other destinations in South Korea.
Is September the best time to go to South Korea?
In our opinion September is a good time to visit South Korea with commonly pleasant weather in Seoul. However, the weather conditions may vary depending on your destination.
On average the best time to visit South Korea is in May and October with generally perfect weather in Seoul.
The worst months are January, July, August and December that can have poor weather conditions.
Interested in more climate information?
We have much more information about the climate in South Korea.
Interested in the weather conditions in a specific month? Select the month below.
Weather and climate has detailed information for every country in the world. Are you going to South Korea? Get detailed historical weather averages for many cities in South Korea.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.