19.12
fri
fri
Day
43°F
NW 6 mph
Precip.
0%
0%
Night
45°F
NW 7 mph
Precip.
0%
0%
20.12
sat
sat
Day
48°F
SE 6 mph
Precip.
67%
67%
Night
39°F
SE 13 mph
Precip.
0%
0%
21.12
sun
sun
Day
34°F
SE 16 mph
Precip.
0%
0%
Night
34°F
S 9 mph
Precip.
0%
0%
22.12
mon
mon
Day
39°F
SW 6 mph
Precip.
0%
0%
Night
41°F
W 9 mph
Precip.
0%
0%
23.12
tue
tue
Day
43°F
NW 9 mph
Precip.
0%
0%
Night
43°F
E 16 mph
Precip.
100%
100%
24.12
wed
wed
Day
32°F
SE 22 mph
Precip.
0%
0%
Night
27°F
SE 16 mph
Precip.
0%
0%
25.12
thu
thu
Day
28°F
SE 8 mph
Precip.
0%
0%
Night
34°F
NW 0 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 48.5°F. The highest and lowest sea temperatures during the month were 52.5°F and 45.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 37.9°F. The highest and lowest sea temperatures during the month were 41.2°F and 35.4°F.
Air temperature in Incheon, °F
Precipitation total in Incheon, in.
* Charts above show average data for the last 3 years.
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
