World Resorts South Korea Seoul Weather

Seoul Sea Temperature in October

Average sea water temperature in October:
+66.9°F
Minimum sea water temperature in October: 73.8°F
Maximum sea water temperature in October: 59.4°F

Daily sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 67.7°F. The highest and lowest sea temperatures during the month were 71.8°F and 62.1°F.

Monthly sea water temperature in Seoul, °F

Which South Korea resorts have warmest sea in October?

Place name October 2025 October 2024
Jeju 78.0°F 75.6°F
Busan 73.5°F 74.0°F
Incheon 68.4°F 69.6°F
Seoul 67.7°F 68.4°F
Yongpyong 67.6°F 69.5°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 85.8 °F
June 82.2 °F
Warmest sea temp:
August 78.9 °F
September 74.9 °F
July 74.8 °F
Coldest months:
January 32.6 °F
December 36.0 °F
February 38.3 °F
Rainiest months:
July 11 days
August 8 days
September 5 days
Windiest months:
April 7.1 mph
March 7.1 mph
May 6.5 mph

Seoul on a weather map

Current weather
13:04
Seoul
+79°F
W 4 mph
Feels like: +77°F
Precip.: 0%
Places in South Korea:
Name
°F
Yongpyong
+72°F
Incheon
+79°F
Muju
+75°F
Busan
+77°F
Seoul
+79°F
Jeju
+73°F
24 Hours Forecast
Seoul
Local time: 13:04
September 16, wednesday
1500
82°F
W
4 mph
1800
79°F
N
2 mph
2100
73°F
S
1 mph
September 17, thursday
0000
70°F
W
3 mph
0300
66°F
W
3 mph
0600
64°F
W
4 mph
0900
70°F
W
4 mph
1200
77°F
W
6 mph
Units of measurement: °C / °F