Temperature
Warm by day, warm at night.
82°Ftypical Aug high
Incheon is most comfortable in May and October. Summers are warm and winters are cold. The wettest months are roughly July to August. Humidity is usually low.

Warm by day, warm at night.
One of the wettest months.
Cloudier spells limit sunshine.
Warm days, with some hot afternoons and occasional humid spells.
Mostly cloudy skies.
Want a side-by-side climate view? Compare Incheon with Barcelona.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology