World Resorts South Korea Incheon Weather

Incheon sea water temperature

Current sea water temperature:
+85.5°F
Minimum sea water temperature in August: 86.0°F
Maximum sea water temperature in August: 72.5°F
Average sea water temperature in August: 79.0°F

Sea water temperature for the last 10 days:

August 6 85.5°F August 1 81.1°F
August 5 85.1°F July 31 80.2°F
August 4 83.5°F July 30 79.9°F
August 3 82.2°F July 29 77.9°F
August 2 81.9°F July 28 79.0°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:
2026
2025
2024

The average sea water temperature in July of 2026 was 77.4°F. The highest and lowest sea temperatures during the month were 80.8°F and 73.2°F.

Best time for vacation in Incheon

Sunniest months:
May 19 days
October 18 days
March 18 days
Warmest months:
August 84.4 °F
July 81.8 °F
September 78.6 °F
Warmest sea temp:
August 79.1 °F
September 75.4 °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

Incheon
+84°F
S 4 mph
Feels like: +91°F
Precip.: 9%
Places in South Korea:
Name
°F
+72°F
+84°F
+72°F
+79°F
+88°F
+81°F
24 Hours Forecast
Incheon
Local time: 00:29
August 07, friday
0300
82°F
SW
2 mph
0600
82°F
NW
3 mph
0900
84°F
NW
2 mph
1200
88°F
E
5 mph
1500
86°F
E
11 mph
1800
88°F
E
8 mph
2100
84°F
SE
5 mph
August 08, saturday
0000
86°F
S
6 mph
Units of measurement: °C / °F