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:
2025
2024
2023

The average sea water temperature in May of 2025 was 58.7°F. The highest and lowest sea temperatures during the month were 63.7°F and 53.1°F.

Monthly sea water temperature in Seoul, °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 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 32.8 °F
December 36.0 °F
February 38.2 °F
Rainiest months:
July 11 days
August 8 days
June 5 days
Windiest months:
April 7.2 mph
March 7.2 mph
May 6.5 mph

Seoul on a weather map

Current weather
08:45
Seoul
+25°F
SE 12 mph
Feels like: +14°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
Seoul
Local time: 08:45
January 13, tuesday
0900
25°F
SE
12 mph
1200
23°F
SE
15 mph
1500
23°F
SE
14 mph
1800
19°F
SE
12 mph
2100
18°F
SE
9 mph
January 14, wednesday
0000
18°F
SE
6 mph
0300
18°F
SE
3 mph
0600
18°F
SW
1 mph
Units of measurement: °C / °F