World Resorts South Korea Seoul Weather

Seoul Sea Temperature in May

Average sea water temperature in May:
+57.9°F
Minimum sea water temperature in May: 65.8°F
Maximum sea water temperature in May: 48.4°F

Daily sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 59.0°F. The highest and lowest sea temperatures during the month were 62.1°F and 57.6°F.

Monthly sea water temperature in Seoul, °F

Which South Korea resorts have warmest sea in May?

Place name May 2026 May 2025
Jeju 62.5°F 60.9°F
Busan 60.2°F 59.4°F
Seoul 59.0°F 58.7°F
Incheon 58.7°F 58.9°F
Yongpyong 57.1°F 55.7°F

Best time for vacation in Seoul

Sunniest months:
May 19 days
October 18 days
March 17 days
Warmest months:
August 87.0 °F
July 85.9 °F
June 82.2 °F
Warmest sea temp:
August 78.7 °F
September 74.9 °F
July 74.7 °F
Coldest months:
January 32.6 °F
December 36.0 °F
February 38.3 °F
Rainiest months:
July 11 days
August 8 days
June 5 days
Windiest months:
April 7.1 mph
March 7.1 mph
May 6.5 mph

Seoul on a weather map

Current weather
03:18
Seoul
+64°F
W 2 mph
Feels like: +64°F
Precip.: 0%
Places in South Korea:
Name
°F
Yongpyong
+61°F
Incheon
+64°F
Muju
+55°F
Busan
+63°F
Seoul
+64°F
Jeju
+63°F
24 Hours Forecast
Seoul
Local time: 03:18
May 18, monday
0600
64°F
W
2 mph
0900
75°F
NW
2 mph
1200
84°F
NE
6 mph
1500
84°F
E
9 mph
1800
79°F
E
8 mph
2100
73°F
E
2 mph
May 19, tuesday
0000
72°F
NE
2 mph
0300
70°F
N
1 mph
Units of measurement: °C / °F