When to go
The Best Time to Visit Jeju
Month-by-month climate data for Jeju, South Korea — daily highs and lows, rain days, and an honest verdict for every month of the year.
Timing is the first real decision when planning Jeju— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
April–June, September–October. Cherry blossoms and canola fields in April; clear hiking weather in autumn. Summer brings beach season and the yearly typhoon watch.
Warmest in Jeju: Aug (30°C / 86°F) · Coolest: Jan (8°C / 46°F) · Wettest: Jul (~20 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Jeju climate, month by month
January
8° / 3°C
~16 rain days
Tough
February
10° / 4°C
~14 rain days
Fair
March
14° / 7°C
~13 rain days
Good
April
17° / 11°C
~10 rain days
Excellent
May
22° / 15°C
~11 rain days
Excellent
June
25° / 20°C
~14 rain days
Good
July
29° / 24°C
~20 rain days
Good
August
30° / 25°C
~19 rain days
Fair
September
26° / 22°C
~18 rain days
Good
October
21° / 16°C
~10 rain days
Excellent
November
16° / 11°C
~12 rain days
Good
December
9° / 5°C
~15 rain days
Fair
Plan around it
Dates locked in? Start from the Jeju travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.