World Resorts South Korea Incheon Weather

Incheon Sea Temperature in October

Average sea water temperature in October:
+67.4°F
Minimum sea water temperature in October: 76.6°F
Maximum sea water temperature in October: 59.2°F

Daily sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 68.4°F. The highest and lowest sea temperatures during the month were 72.9°F and 62.2°F.

Monthly sea water temperature in Incheon, °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 Incheon

Sunniest months:
May 19 days
October 18 days
March 18 days
Warmest months:
August 84.2 °F
July 81.8 °F
September 78.6 °F
Warmest sea temp:
August 79.2 °F
September 75.5 °F
July 74.8 °F
Coldest months:
January 33.6 °F
February 37.6 °F
December 38.0 °F
Rainiest months:
July 10 days
August 8 days
June 4 days
Windiest months:
December 11.1 mph
November 10.3 mph
January 10.3 mph

Incheon on a weather map

Current weather
23:07
Incheon
+63°F
SE 4 mph
Feels like: +63°F
Precip.: 3%
Places in South Korea:
Name
°F
Yongpyong
+52°F
Incheon
+63°F
Muju
+46°F
Busan
+66°F
Seoul
+63°F
Jeju
+63°F
24 Hours Forecast
Incheon
Local time: 23:07
October 07, wednesday
0000
63°F
SE
4 mph
0300
61°F
SE
3 mph
0600
59°F
S
3 mph
0900
63°F
S
3 mph
1200
70°F
SE
5 mph
1500
70°F
E
8 mph
1800
68°F
E
7 mph
2100
66°F
SE
4 mph
Units of measurement: °C / °F