South Korea

South Korea in September

Asia Updated 2026-07-01

The humidity finally breaks, but Chuseok puts the whole country on the road.

Is September a good time to visit South Korea?

September sits mid-range in South Korea — around 64/100 nationally. January is noticeably calmer.

What closes and what fills up in September

  • Chuseok (movable) — the largest domestic travel week

How September compares across the year

Book things to do

South Korea: tours and tickets in Seoul, from our booking partner.

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Frequently asked questions

Is September a good month to visit South Korea?

September sits mid-range in South Korea — around 64/100 nationally. January is noticeably calmer.

How busy is South Korea in September?

Averaged across the destinations we track, South Korea sits near 64/100 in September. The calmest of them is Seoul.

What is the weather like in South Korea in September?

Expect average highs near 26°C and lows near 18°C, with roughly 9 wet days — though South Korea varies by region.

Other months in South Korea