Measurements:
°C
°F
Jeju
70°F
S 6 mph
Feels like: 70°F
Precip: 17%
World Resorts South Korea Jeju Weather

14 Day Weather Forecast

09.29
tue
DAY
74°F
S 8 mph
precip
12%
NIGHT
70°F
NE 2 mph
precip
6%
09.30
wed
DAY
78°F
SW 6 mph
precip
5%
NIGHT
70°F
SE 7 mph
precip
23%
10.01
thu
DAY
70°F
S 14 mph
precip
5%
NIGHT
64°F
S 11 mph
precip
4%
10.02
fri
DAY
68°F
SW 9 mph
precip
11%
NIGHT
64°F
W 6 mph
precip
2%
10.03
sat
DAY
72°F
W 12 mph
precip
2%
NIGHT
66°F
SW 6 mph
precip
15%
10.04
sun
DAY
72°F
S 7 mph
precip
1%
NIGHT
66°F
S 8 mph
precip
17%
10.05
mon
DAY
72°F
SW 13 mph
precip
4%
NIGHT
66°F
SW 5 mph
precip
29%
10.06
tue
DAY
70°F
SE 11 mph
precip
4%
NIGHT
62°F
S 9 mph
precip
3%
10.07
wed
DAY
70°F
W 7 mph
precip
15%
NIGHT
64°F
NW 5 mph
precip
19%
10.08
thu
DAY
74°F
SE 2 mph
precip
3%
NIGHT
68°F
N 4 mph
precip
17%
10.09
fri
DAY
74°F
SE 3 mph
precip
2%
NIGHT
68°F
N 4 mph
precip
9%
10.10
sat
DAY
76°F
SE 3 mph
precip
16%
NIGHT
68°F
NW 5 mph
precip
10%
10.11
sun
DAY
72°F
W 19 mph
precip
36%
NIGHT
68°F
W 20 mph
precip
11%
10.12
mon
DAY
72°F
W 17 mph
precip
3%
NIGHT
68°F
W 15 mph
precip
6%

Jeju Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Jeju was 82.5°F. The maximum and minimum values were 79.4°F and 89.0°F respectively.

Jeju on the Weather Map

Best Time to Visit Jeju
The most sunny months:
May 15 days
October 14 days
April 14 days
The most warm months:
August 88.3 °F
July 85.7 °F
September 80.6 °F
Warmest sea temperature:
August 84.8 °F
September 80.6 °F
July 79.6 °F
The most cold months:
January 44.2 °F
February 45.9 °F
December 48.5 °F
The most rainy months:
August 8 days
July 7 days
September 6 days
The most windy months:
January 14 mph
December 14 mph
February 14 mph
South Korea Resorts:
NAME
F°
Busan +76
Incheon +70
Jeju +70
Muju +66
Seoul +70
Yongpyong +64
24 Hours Weather Forecast
Jeju
Local time: 08:18
29 sep, tuesday
0900 70°F
S
6 mph
1200 74°F
S
8 mph
1500 74°F
SE
9 mph
1800 70°F
SE
5 mph
2100 70°F
SW
3 mph
30 sep, wednesday
0000 70°F
NE
2 mph
0300 68°F
NE
2 mph
0600 68°F
NW
4 mph