Jeju Weather in July: What to Expect
In July, Jeju averages highs of 28.5°C and lows of 24.2°C, with about 17 rainy days (~242 mm). Verdict: Wet season — plan around rain — ~17 rainy days this month. That makes it the 3rd hottest of South Korea's 6 main cities this month.
Jeju vs other South Korea cities in July
South Korea is not one climate. In July, Gyeongju runs to 29.5°C while Sokcho sits at 26.8°C — a 3°C spread. Here is where Jeju falls:
What to pack for Jeju in July
With highs near 28.5°C and lows around 24.2°C, pack light summer clothing plus a thin layer for evenings, a compact umbrella or rain shell.
Jeju is on the coast — add swimwear; sea conditions are pleasant for swimming this month.
What to do in Jeju in July
With 28.5°C midday highs, start outdoor sights early and keep afternoons for shaded or indoor stops. Top sights:
Public holidays in South Korea, July
- 2026-07-17 — Constitution Day
- 2027-07-19 — Constitution Day
Jeju in July — FAQs
What is the weather like in Jeju in July?
In July, Jeju averages daytime highs of 28.5°C and overnight lows around 24.2°C, with roughly 17 rainy days and about 242 mm of rain across the month. Wet season — plan around rain — ~17 rainy days this month.
Is July a good time to visit Jeju?
Wet season — plan around rain. Plan outdoor sights for early morning and keep midday for indoor or shaded activities. Among South Korea's cities, Jeju is the 3rd hottest this month.
What should I pack for Jeju in July?
For July (24.2–28.5°C), pack light summer clothing plus a thin layer for evenings, a compact umbrella or rain shell.
What is there to do in Jeju in July?
Jeju's main sights include Jeju Volcanic Island and Lava Tubes, Hallasan National Park, Dadohaehaesang National Park. Time outdoor sites for early morning given the midday heat.
Are there public holidays in South Korea in July?
Yes — Constitution Day (2026-07-17), Constitution Day (2027-07-19). Sites can be busier or closed around these dates.
Jeju weather by month: