Jeju Weather in June: What to Expect
In June, Jeju averages highs of 24.5°C and lows of 19.4°C, with about 14 rainy days (~224 mm). Verdict: Wet season — plan around rain — ~14 rainy days this month. That makes it the 5th hottest of South Korea's 6 main cities this month.
Jeju vs other South Korea cities in June
South Korea is not one climate. In June, Gyeongju runs to 27.6°C while Sokcho sits at 23.9°C — a 4°C spread. Here is where Jeju falls:
What to pack for Jeju in June
With highs near 24.5°C and lows around 19.4°C, pack layers — a light jacket for mornings and evenings, a compact umbrella or rain shell.
Jeju is on the coast — add swimwear; the water can feel cool for swimming this month.
What to do in Jeju in June
With 24.5°C midday highs, start outdoor sights early and keep afternoons for shaded or indoor stops. Top sights:
Public holidays in South Korea, June
- 2026-06-03 — Local Election Day
- 2026-06-06 — Memorial Day
- 2027-06-06 — Memorial Day
Jeju in June — FAQs
What is the weather like in Jeju in June?
In June, Jeju averages daytime highs of 24.5°C and overnight lows around 19.4°C, with roughly 14 rainy days and about 224 mm of rain across the month. Wet season — plan around rain — ~14 rainy days this month.
Is June 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 5th hottest this month.
What should I pack for Jeju in June?
For June (19.4–24.5°C), pack layers — a light jacket for mornings and evenings, a compact umbrella or rain shell.
What is there to do in Jeju in June?
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 June?
Yes — Local Election Day (2026-06-03), Memorial Day (2026-06-06), Memorial Day (2027-06-06). Sites can be busier or closed around these dates.
Jeju weather by month: