Current sea water temperature:
+42.1°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 28 | 42.1°F | December 23 | 44.6°F |
| December 27 | 43.3°F | December 22 | 45.0°F |
| December 26 | 43.2°F | December 21 | 45.0°F |
| December 25 | 44.1°F | December 20 | 45.9°F |
| December 24 | 44.4°F | December 19 | 45.9°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
January
January
| Incheon |
Best time for vacation in Incheon
Incheon on a weather map
Places in South Korea:
Name
°F
24 Hours Forecast
Incheon
Local time: 00:54
December 29, monday
0300
43°F
NE
15 mph
15 mph
0600
45°F
E
14 mph
14 mph
0900
43°F
E
11 mph
11 mph
1200
43°F
E
13 mph
13 mph
1500
41°F
E
14 mph
14 mph
1800
39°F
SE
9 mph
9 mph
2100
36°F
S
9 mph
9 mph
December 30, tuesday
0000
34°F
SE
9 mph
9 mph
