World Resorts South Korea Incheon Weather

Incheon sea water temperature

Current sea water temperature:
+38.1°F
Minimum sea water temperature in February: 41.7°F
Maximum sea water temperature in February: 33.1°F
Average sea water temperature in February: 36.8°F

Sea water temperature for the last 10 days:

February 24 38.1°F February 19 33.4°F
February 23 37.9°F February 18 34.5°F
February 22 38.3°F February 17 35.4°F
February 21 38.1°F February 16 33.8°F
February 20 36.0°F February 15 36.3°F

When is the warmest sea in Incheon?

Based on the data about daily sea water temperature for the last three years the warmest sea in Incheon was noticed in August, September and July.

Monthly Sea Temperatures in Incheon, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 82.0°F. The highest and lowest sea temperatures during the month were 83.8°F and 80.4°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 78.3°F. The highest and lowest sea temperatures during the month were 82.4°F and 73.0°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 78.3°F. The highest and lowest sea temperatures during the month were 83.3°F and 74.5°F.

Best time for vacation in Incheon

Sunniest months:
October 18 days
May 18 days
March 18 days
Warmest months:
August 84.4 °F
July 82.0 °F
September 78.6 °F
Warmest sea temp:
August 79.1 °F
September 75.4 °F
July 74.7 °F
Coldest months:
January 33.6 °F
February 37.6 °F
December 38.0 °F
Rainiest months:
July 10 days
August 8 days
June 5 days
Windiest months:
December 11.1 mph
November 10.3 mph
January 10.3 mph

Incheon on a weather map

Incheon
+37°F
W 6 mph
Feels like: +32°F
Precip.: 0%
Places in South Korea:
Name
°F
+32°F
+37°F
+41°F
+48°F
+37°F
+48°F
24 Hours Forecast
Incheon
Local time: 08:38
February 25, wednesday
0900
37°F
W
6 mph
1200
43°F
W
6 mph
1500
48°F
SW
4 mph
1800
50°F
S
4 mph
2100
46°F
SW
5 mph
February 26, thursday
0000
45°F
N
3 mph
0300
41°F
SW
4 mph
0600
41°F
SW
5 mph
Units of measurement: °C / °F