Seoul at dusk from above, with neon-lit towers and light trails across a busy intersection

Seoul in September

Summer starts to fade

The short answer

September is one of the best months to visit Seoul.

September gradually becomes cooler and more comfortable as summer humidity eases.

8/10 overall18–26°CModerate-High crowdsModerate-High
Weather8/10
Crowds6.5/10
Prices6.5/10
Events7/10

September in detail

What September actually feels like

Weather
18–26°C
Summer starts to fade
Crowds
Moderate-High
Moderate-High
Prices
Moderate-High
Moderate-High

+Improving temperatures and humidity

–Early September can still feel hot

My tip for September

The second half of the month is generally more comfortable for long days outside.

  • comfortable late-summer exploring

How September compares

Against the other eleven months

4th of 12 overall in Seoul, 4th for weather, 5th for space, 5th for value. The emptiest month is April; the best value is March.

See all twelve months for Seoul

Not set on September?

Even stronger months in Seoul

Ready to book September in Seoul?

Improving temperatures and humidity

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