Current sea water temperature:
+41.2°F
| Minimum sea water temperature in January: | 44.1°F |
| Maximum sea water temperature in January: | 35.4°F |
| Average sea water temperature in January: | 39.2°F |
| more information | |
14 days
forecast
forecast
| Incheon |
monthly
weather
weather
| Incheon |
Sea water temperature for the last 10 days:
| January 3 | 41.2°F | December 29 | 42.3°F |
| January 2 | 41.2°F | December 28 | 42.1°F |
| January 1 | 41.9°F | December 27 | 43.3°F |
| December 31 | 41.4°F | December 26 | 43.2°F |
| December 30 | 42.3°F | December 25 | 44.1°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: 21:57
January 04, sunday
0000
32°F
SE
5 mph
5 mph
0300
32°F
SE
6 mph
6 mph
0600
30°F
S
4 mph
4 mph
0900
30°F
S
4 mph
4 mph
1200
32°F
SE
2 mph
2 mph
1500
34°F
SE
6 mph
6 mph
1800
34°F
SE
6 mph
6 mph
2100
34°F
SE
5 mph
5 mph
