Measurements:
°C
°F
Jeju
82°F
E 9 mph
Feels like: 90°F
Precip: 16%
World Resorts South Korea Jeju Weather

7 Day Weather Forecast

07.29
wed
DAY
90°F
SE 9 mph
precip
9%
NIGHT
84°F
E 9 mph
precip
16%
07.30
thu
DAY
90°F
SE 11 mph
precip
5%
NIGHT
80°F
E 7 mph
precip
13%
07.31
fri
DAY
90°F
SE 10 mph
precip
5%
NIGHT
80°F
E 8 mph
precip
12%
08.01
sat
DAY
92°F
SE 9 mph
precip
11%
NIGHT
78°F
E 6 mph
precip
8%
08.02
sun
DAY
92°F
SE 9 mph
precip
3%
NIGHT
78°F
SE 5 mph
precip
6%
08.03
mon
DAY
94°F
SW 9 mph
precip
4%
NIGHT
82°F
W 6 mph
precip
10%
08.04
tue
DAY
92°F
SW 14 mph
precip
6%
NIGHT
84°F
SW 11 mph
precip
21%

Jeju Sea Water Temperature in July, °F

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Jeju was 25.3°F. The maximum and minimum values were 22.3°F and 29.0°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 85.6 °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