Coldest sea in South Korea in December

62 coastal locations in South Korea ranked by typical December sea temperature, coldest first. Region-wide average in December: 13.8°C.

Coldest in December

Daeyeonpyeongdo

7.9°C December mean in South Korea

Regional December average

13.8°C

across all 62 coastal locations in South Korea

Vs annual mean

-3.4°C

below the year-round regional average

What the South Korea sea feels like in December

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

South Korea monthly average 9.9°C to 26.2°C

Warmest month August 26.2°C
Coldest month February 9.9°C
Annual mean 17.1°C
Months above 20°C 4 of 12

Where December fits in the year

December sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve South Korea month rankings:

South Korea sea temperature map (live)

The map shows today's latest reading at every South Korea location. The list below is based on the typical December mean.

Zoom in to see individual locations. Click a pin for water temperatures. View list →

°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 coldest South Korea locations in December

Sorted by typical December mean from a decade of daily readings, coldest first. Click any place for the full location page.

#	Location	Country	December mean
1	Daeyeonpyeongdo Incheon	South Korea	7.9°C
2	Ansan	South Korea	9.2°C
3	Goyang	South Korea	9.2°C
4	Seoul	South Korea	9.2°C
5	Taesal Li	South Korea	9.7°C
6	Hwaseong	South Korea	9.7°C
7	Incheon	South Korea	9.7°C
8	Baengnyeongdo Incheon	South Korea	10.4°C
9	Daecheongdo Incheon	South Korea	10.4°C
10	Boryeong	South Korea	10.5°C
11	Kunsan	South Korea	10.5°C
12	Moppo	South Korea	10.7°C
13	Sinan	South Korea	10.7°C
14	Mohang-ri Chungcheongnam-do	South Korea	11.0°C
15	Wido Jeollabuk-do	South Korea	11.1°C
16	Anheung Chungcheongnam-do	South Korea	11.4°C
17	Eocheongdo Jeollabuk-do	South Korea	11.7°C
18	Sunchun	South Korea	12.3°C
19	Byeokpajin Jeollanam-do	South Korea	12.5°C
20	Eoranjin Jeollanam-do	South Korea	12.5°C
21	Modo Jeollanam-do	South Korea	12.5°C
22	Sangmado Jeollanam-do	South Korea	12.5°C
23	Hataedo Jeollanam-do	South Korea	12.6°C
24	Geumdangdo Jeollanam-do	South Korea	12.6°C
25	Daeheuksando Jeollanam-do	South Korea	12.7°C

Show 25 more ▸

26	Narodo Jeollanam-do	South Korea	12.9°C
27	Gwanyang Jeollanam-do	South Korea	13.0°C
28	Yeosu Jeollanam-do	South Korea	13.0°C
29	Sokcho	South Korea	13.7°C
30	Reisui	South Korea	14.1°C
31	Gangneung	South Korea	14.2°C
32	Yongpyong	South Korea	14.5°C
33	Soando Jeollanam-do	South Korea	14.6°C
34	Cheongsando Jeollanam-do	South Korea	14.7°C
35	Wando Jeollanam-do	South Korea	14.7°C
36	Geomundo Jeollanam-do	South Korea	14.7°C
37	Jumunjin Gangwon-do	South Korea	14.8°C
38	Yokjido Gyeongsangnam-do	South Korea	14.8°C
39	Tonghae	South Korea	14.8°C
40	Mukho Gangwon-do	South Korea	15.2°C
41	Hoko	South Korea	15.5°C
42	Pohang	South Korea	15.5°C
43	Jukbyeon Gyeongsangbuk-do	South Korea	15.5°C
44	Ganggu Gyeongsangnam-do	South Korea	15.6°C
45	Chujado Jeju-do	South Korea	15.7°C
46	Jisepo Gyeongsangnam-do	South Korea	15.8°C
47	Geoje	South Korea	15.9°C
48	Kyosai	South Korea	15.9°C
49	Ulleungdo Gyeongsangbuk-do	South Korea	16.0°C
50	Gadeokdo Busan	South Korea	16.5°C

Warmest 10 in South Korea in December

Same data the other way. The warmest spots for the same month.

#	Location	Country	December mean
1	Seogwipo Jeju-do	South Korea	19.7°C
2	Hwasun Jeju-do	South Korea	19.5°C
3	Jukdo Jeju-do	South Korea	18.2°C
4	Udo Sudo Jeju-do	South Korea	18.1°C
5	Busan	South Korea	17.1°C
6	Sinhyeon	South Korea	17.1°C
7	Ulsan	South Korea	17.1°C
8	Gampo Gyeongsangbuk-do	South Korea	17.0°C
9	Jeju	South Korea	16.9°C
10	Jejudo	South Korea	16.9°C