Current sea water temperature:
+45.5°F
| Minimum sea water temperature in December: | 54.0°F |
| Maximum sea water temperature in December: | 40.6°F |
| Average sea water temperature in December: | 46.3°F |
| more information | |
14 days
forecast
forecast
| Incheon |
monthly
weather
weather
| Incheon |
Sea water temperature for the last 10 days:
| December 18 | 45.5°F | December 13 | 47.8°F |
| December 17 | 46.2°F | December 12 | 48.0°F |
| December 16 | 46.0°F | December 11 | 47.3°F |
| December 15 | 46.4°F | December 10 | 48.4°F |
| December 14 | 47.1°F | December 9 | 47.5°F |
Monthly sea water temperature, °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.
current
weather
weather
| Incheon |
weather in
December
December
| Incheon |
Best time for vacation in Incheon
Incheon on a weather map
Places in South Korea:
Name
°F
24 Hours Forecast
Incheon
Local time: 01:35
December 19, friday
0300
39°F
NW
4 mph
4 mph
0600
39°F
NW
7 mph
7 mph
0900
39°F
NW
10 mph
10 mph
1200
43°F
NW
6 mph
6 mph
1500
46°F
NW
9 mph
9 mph
1800
46°F
NW
7 mph
7 mph
2100
46°F
NW
7 mph
7 mph
December 20, saturday
0000
45°F
NW
7 mph
7 mph
