Verdict: Good month
Jeju Weather in June
June hits the sweet spot in Jeju — highs around 25°C (77°F), ideal for a full day on foot. Expect showers on roughly 14 days of the month — rarely trip-ruining, worth planning around. Overall, June is a solid month to visit Jeju.
Average high
25°C / 77°F
Average low
20°C / 68°F
Rain days
~14
Precipitation
227 mm
What to pack for Jeju in June
- Summer clothes, plus one light layer for air-con and evenings
- Rain gear is non-negotiable — expect rain on roughly 14 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
June against the rest of the year
Warmest in Jeju: Aug (30°C / 86°F) · Coolest: Jan (8°C / 46°F) · Wettest: Jul (~20 rain days)
8°
3°
Jan
10°
4°
Feb
14°
7°
Mar
17°
11°
Apr
22°
15°
May
25°
20°
Jun
29°
24°
Jul
30°
25°
Aug
26°
22°
Sep
21°
16°
Oct
16°
11°
Nov
9°
5°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)