Measurements:
°C
°F
CURRENT WEATHER
20:52
Jeju
72°F
NW 9 mph
Feels like: 72°F
Precip: 82%
World Resorts South Korea Jeju Weather

7 Day Weather Forecast

05.19
tue
DAY
76°F
N 2 mph
precip
0%
NIGHT
70°F
W 11 mph
precip
100%
05.20
wed
DAY
70°F
W 9 mph
precip
100%
NIGHT
72°F
NE 14 mph
precip
100%
05.21
thu
DAY
68°F
E 16 mph
precip
100%
NIGHT
66°F
W 10 mph
precip
89%
05.22
fri
DAY
74°F
W 12 mph
precip
0%
NIGHT
68°F
NW 8 mph
precip
0%
05.23
sat
DAY
68°F
W 12 mph
precip
100%
NIGHT
64°F
SW 12 mph
precip
0%
05.24
sun
DAY
74°F
S 6 mph
precip
0%
NIGHT
66°F
SE 2 mph
precip
0%
05.25
mon
DAY
80°F
SW 4 mph
precip
0%
NIGHT
68°F
NW 3 mph
precip
0%

Jeju Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Jeju was 17.1°F. The maximum and minimum values were 15.3°F and 18.8°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
more details