South Korea weather & when to go: September

September overview

September sees the start of autumn in South Korea, although at the beginning of the month, expect the heavy rain and muggy heat of the previous months to continue. Travel later in the month for more favourable weather conditions.

Very Good
Not Advised

Annual overview

  Best   Good
  Mixed   Poor
Jan Feb Mar Apr May Jun
Jul Aug Sep Oct Nov Dec

September's weather in detail

September sees the muggy heat and heavy rain of the previous summer months begin to dwindle. As the month progresses, the heat begins to drop and the rains lessen, thanks to autumn gradually taking hold. This is when South Korea bursts into colour with stunning shades of orange and red peppering its landscapes.

For most of the month, however, temperatures remain high, nudging towards a maximum of 30°C, and humidity levels can make things feel a bit sticky and uncomfortable.

The breezy coastal resorts around Busan offer a refreshing respite, as do the mountainous National Parks, such as Seoraksan. Time your visit towards the end of September for fewer wet days and a much more comfortable climate.

Our recommended journeys

Besides close geographical proximity South Korea and Japan share many similarities and make natural holiday partners. Both are countries rich in ancient history, where deep-rooted traditions are balanced by contemporary culture and technological sophistication. Natural wonders and scenic beauty can be found throughout the two, as can a distinctive cuisine and friendly people. This ten day itinerary offers a teasing taster of both destinations.

See all our itineraries in South Korea

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Key Festivals & Religious Ceremonies


A three day harvest festival celebrated across the country. Families come together, give thanks, share food and remember their ancestors. 

 Angdong Mask Dance Festival

Dance, colour and typically Korean loud crashes make this an exciting cultural festival in late September.

⟵ August

October ⟶

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