World Resorts South Korea Jeju Weather

Jeju Sea Temperature in May

Average sea water temperature in May:
+61.9°F
Minimum sea water temperature in May: 67.3°F
Maximum sea water temperature in May: 57.6°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 60.9°F. The highest and lowest sea temperatures during the month were 63.0°F and 59.2°F.

Monthly sea water temperature in Jeju, °F

Which South Korea resorts have warmest sea in May?

Place name May 2025 May 2024
Jeju 60.9°F 63.4°F
Busan 59.4°F 62.4°F
Incheon 58.9°F 61.1°F
Seoul 58.7°F 61.1°F
Yongpyong 55.7°F 59.9°F

Best time for vacation in Jeju

Sunniest months:
May 15 days
October 14 days
April 14 days
Warmest months:
August 84.5 °F
July 82.0 °F
September 77.7 °F
Warmest sea temp:
August 81.2 °F
September 77.5 °F
July 76.6 °F
Coldest months:
January 44.8 °F
February 46.2 °F
December 48.6 °F
Rainiest months:
August 8 days
September 7 days
July 7 days
Windiest months:
January 14.4 mph
December 14.1 mph
February 14.0 mph

Jeju on a weather map

Current weather
08:46
Jeju
+46°F
SE 12 mph
Feels like: +41°F
Precip.: 0%
Places in South Korea:
Name
°F
Yongpyong
+21°F
Incheon
+27°F
Muju
+34°F
Busan
+43°F
Seoul
+25°F
Jeju
+46°F
24 Hours Forecast
Jeju
Local time: 08:46
January 13, tuesday
0900
46°F
SE
12 mph
1200
46°F
SE
15 mph
1500
45°F
SE
19 mph
1800
41°F
SE
16 mph
2100
39°F
S
12 mph
January 14, wednesday
0000
37°F
SE
9 mph
0300
36°F
S
5 mph
0600
37°F
SW
4 mph
Units of measurement: °C / °F