Measurements:
°C
°F
CURRENT WEATHER
12:59
Jeju
88°F
S 6 mph
Feels like: 94°F
Precip: 14%
World Resorts South Korea Jeju Weather

7 Day Weather Forecast

08.19
wed
DAY
88°F
S 6 mph
precip
14%
NIGHT
80°F
N 3 mph
precip
12%
08.20
thu
DAY
88°F
W 6 mph
precip
24%
NIGHT
80°F
NW 6 mph
precip
11%
08.21
fri
DAY
90°F
W 13 mph
precip
15%
NIGHT
80°F
NW 6 mph
precip
13%
08.22
sat
DAY
88°F
W 14 mph
precip
44%
NIGHT
80°F
NW 6 mph
precip
12%
08.23
sun
DAY
88°F
W 13 mph
precip
14%
NIGHT
80°F
N 4 mph
precip
7%
08.24
mon
DAY
86°F
S 6 mph
precip
16%
NIGHT
80°F
SE 1 mph
precip
10%
08.25
tue
DAY
86°F
S 6 mph
precip
4%
NIGHT
80°F
SE 2 mph
precip
10%

Jeju Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Jeju was 27.5°F. The maximum and minimum values were 26.1°F and 29.9°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 80.8 °F
Warmest sea temperature:
August 84.7 °F
September 80.5 °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
September 7 days
July 7 days
The most windy months:
January 14 mph
December 14 mph
February 14 mph
more details