Jeju Island weather in September
Warm and pleasant, with regular rainfall. Average highs of 25°C and lows of 22°C, with around 15 rainy days expected throughout the month.
While September isn't our top-rated month for Jeju Island, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
25°C
Average low
22°C
Rainy days
15 days
Best months to visit
June
What to do in Jeju Island in September
Whatever the weather, Jeju Island rewards curious visitors. Here are some of the best ways to spend your time:
Climb Mount Halla's volcanic cone at dawn
Watch haenyeo divers harvesting sea urchins
Explore Manjangul Cave lava tube system
Visit Jusangjeolli columnar basalt cliffs
Relax in natural hot spring spas
Shop for local tangerines and specialty foods
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
8C
Cold, with some rainy days.
February
8C
Cold, with occasional showers.
March
13C
Cool, with some rainy days.
April
17C
Cool, with occasional showers.
May
21C
Mild and comfortable, with some rainy days.
Recommended
June
24C
Mild and comfortable, with some rainy days.
July
28C
Warm and pleasant, with regular rainfall.
August
29C
Warm and pleasant, with regular rainfall.
September (you are here)
25C
Warm and pleasant, with regular rainfall.
October
20C
Mild and comfortable, with occasional showers.
November
16C
Cool, with some rainy days.
December
10C
Cool, with some rainy days.
Book your September trip to Jeju Island
Find hotels, tours and experiences for the perfect escape.
