Measurements:
°C
°F
Jeju
76°F
SE 6 mph
Feels like: 80°F
Precip: 1%
World Resorts South Korea Jeju Weather

7 Day Weather Forecast

06.10
wed
DAY
76°F
SE 7 mph
precip
2%
NIGHT
68°F
NE 10 mph
precip
5%
06.11
thu
DAY
74°F
SE 11 mph
precip
4%
NIGHT
68°F
E 6 mph
precip
6%
06.12
fri
DAY
78°F
SE 6 mph
precip
3%
NIGHT
70°F
NE 5 mph
precip
6%
06.13
sat
DAY
80°F
SW 2 mph
precip
5%
NIGHT
72°F
SW 1 mph
precip
7%
06.14
sun
DAY
78°F
NW 11 mph
precip
4%
NIGHT
72°F
NW 12 mph
precip
38%
06.15
mon
DAY
70°F
NW 14 mph
precip
25%
NIGHT
72°F
NW 11 mph
precip
16%
06.16
tue
DAY
76°F
NW 10 mph
precip
74%
NIGHT
74°F
N 5 mph
precip
34%

Jeju Sea Water Temperature in June, °F

Select Year: 2025 2024 2023

The average sea surface temperature in June 2025 for Jeju was 19.8°F. The maximum and minimum values were 17.3°F and 23.5°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 85.5 °F
September 80.8 °F
Warmest sea temperature:
August 84.7 °F
September 80.5 °F
July 79.5 °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