Incheon weather in July

July in Incheon: hot, soaked, with muggy air — a gamble, with 15 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Incheon🇰🇷 South Korea · Korea · City58
  1. 46Jan
  2. 54Feb
  3. 72Mar
  4. 81Apr
  5. 88May
  6. 82Jun
  7. 58Jul
  8. 56Aug
  9. 76Sep
  10. 84Oct
  11. 70Nov
  12. 51Dec

#8 of 12 months in Incheon · #1096 of 1413 destinations to visit in July · comfort 58/100 (tier D)

Days
29°C
Nights
23°C
Wet days
15
Sun
8.4 h
Humidity
87%
Daylight
15 h
Incheon, South Korea
Photo: joon young, Park · Pexels

Traveller notes on Incheon in July

Other months in Incheon

Forum posters describe South Korea in November, Incheon included, as cool with crowds thinning noticeably compared to peak autumn-foliage season. Posters report daytime temperatures typically 8-10C early in the month, with nights already near or below freezing, and mid-November bringing a further drop, often into the 0-10C range, genuinely requiring winter clothing by that point. Posters are direct that November sits in an awkward seasonal gap - past the vivid autumn leaves but before any real snow - making it, in some posters' view, one of the less visually rewarding months, even though the cooler weather and lighter crowds have real appeal for beach areas and quieter sightseeing. Posters generally rate November as a workable but transitional month for Incheon, cool and crowd-free rather than scenically peak.
Tripadvisor community · November · 1 month ago · Read more on Tripadvisor ↗
Forum posters call May and June the best-weather stretch of the Korean year - warm days suited to short sleeves, with a thin layer still useful at night. The month itself shifts noticeably: early May can still want a light jacket or cardigan, while by month's end a t-shirt alone is usually enough. For Incheon specifically, posters point to Wolmido's theme park and traditional garden, the city's historic Chinatown (the oldest and largest in Korea), and Sorae Fish Market for fresh seafood and street food as the core things to do, with the Bupyeong underground market flagged as a particularly good option if a rainy day interrupts outdoor plans.
Tripadvisor community · May · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Incheon's card on the map.

Incheon climate normals — July

Daytime high29°C / 83°F🥵 hot
Nighttime low23°C / 74°F
Feels like (high)33°C / 91°F
Sea temperature27°C / 81°F😎 warm sea
Rainfall261 mm / 10.3 in⛈ soaked
Rainy days15 days
Humidity87%💦 very humid
Dew point22°C / 71°F
Sunshine8.4 h/day
Daylight14.5 h
Wind16 km/h / 10 mph
Air quality (US AQI)84🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Incheon in July

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsPentaport Rock Festival, Summer break (yeoreum banghak) in South Korea, school holidays in 4 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Incheon's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherIncheon's best weather comes in May, June and October — separate windows, not one continuous season.

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Best weatherFair weatherToughest weather

What's on in Incheon in July

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Season

    Jangma, the rain front

    25 Jun – 31 Jul · usuallyMonsoon

    A few weeks of the summer front, which on this coast means low cloud over the bridges and the island ferries cancelling on short notice. The city itself keeps working.

  • Festival

    Pentaport Rock Festival

    31 Jul – 2 AugMusic festivalCrowdedBook early

    Korea's long-running rock weekend, three days on the reclaimed park at Songdo. Hotels in Songdo go before the line-up is announced; Seoul is forty minutes away on the subway if they have gone. Source ↗

What's on around the world in July →

Where is Incheon?

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Incheon in July — FAQ

Is July a good time to visit Incheon?
July in Incheon: hot, soaked, with muggy air — a gamble, with 15 rainy days. It ranks #8 of 12 months for Incheon on SeasonMap's comfort score (58/100).
What is the weather like in Incheon in July?
In July, Incheon averages a daily high of 28.6°C and a low of 23.4°C, with about 260.5 mm of rain over roughly 14.9 rainy days.
What is the air quality in Incheon in July?
Incheon has a mean US Air Quality Index of about 84 in July.