Warmest sea in South Korea in March

62 coastal locations in South Korea ranked by their typical March sea temperature. Region-wide average in March: 10.7°C. The top of the list is where to find the warmest swimming this month.

Warmest in March

Seogwipo

16.3°C March mean in South Korea

Regional March average

10.7°C

across all 62 coastal locations in South Korea

Vs annual mean

-6.5°C

below the year-round regional average

What the South Korea sea feels like in March

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 March fits in the year

March 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 March mean, useful for trip planning weeks or months ahead.

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 warmest South Korea locations in March

Sorted by the typical March mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

#	Location	Country	March mean
1	Seogwipo Jeju-do	South Korea	16.3°C
2	Hwasun Jeju-do	South Korea	15.9°C
3	Udo Sudo Jeju-do	South Korea	15.1°C
4	Jukdo Jeju-do	South Korea	14.6°C
5	Sinhyeon	South Korea	14.5°C
6	Ulsan	South Korea	14.5°C
7	Busan	South Korea	14.4°C
8	Gampo Gyeongsangbuk-do	South Korea	14.0°C
9	Chinhae	South Korea	13.9°C
10	Masan	South Korea	13.9°C
11	Gadeokdo Busan	South Korea	13.9°C
12	Jeju	South Korea	13.6°C
13	Jejudo	South Korea	13.6°C
14	Geoje	South Korea	13.5°C
15	Kyosai	South Korea	13.5°C
16	Jisepo Gyeongsangnam-do	South Korea	13.5°C
17	Hoko	South Korea	13.0°C
18	Pohang	South Korea	13.0°C
19	Geomundo Jeollanam-do	South Korea	12.9°C
20	Ganggu Gyeongsangnam-do	South Korea	12.9°C
21	Yokjido Gyeongsangnam-do	South Korea	12.8°C
22	Chujado Jeju-do	South Korea	12.6°C
23	Cheongsando Jeollanam-do	South Korea	12.6°C
24	Wando Jeollanam-do	South Korea	12.6°C
25	Reisui	South Korea	12.2°C

Show 25 more ▸

26	Soando Jeollanam-do	South Korea	12.1°C
27	Jukbyeon Gyeongsangbuk-do	South Korea	12.1°C
28	Narodo Jeollanam-do	South Korea	11.5°C
29	Mukho Gangwon-do	South Korea	11.4°C
30	Ulleungdo Gyeongsangbuk-do	South Korea	11.4°C
31	Geumdangdo Jeollanam-do	South Korea	11.3°C
32	Tonghae	South Korea	11.2°C
33	Gwanyang Jeollanam-do	South Korea	11.2°C
34	Yeosu Jeollanam-do	South Korea	11.2°C
35	Yongpyong	South Korea	10.9°C
36	Jumunjin Gangwon-do	South Korea	10.8°C
37	Gangneung	South Korea	10.6°C
38	Sunchun	South Korea	10.6°C
39	Sokcho	South Korea	10.0°C
40	Byeokpajin Jeollanam-do	South Korea	9.9°C
41	Eoranjin Jeollanam-do	South Korea	9.9°C
42	Modo Jeollanam-do	South Korea	9.9°C
43	Sangmado Jeollanam-do	South Korea	9.9°C
44	Hataedo Jeollanam-do	South Korea	9.5°C
45	Daeheuksando Jeollanam-do	South Korea	8.5°C
46	Wido Jeollabuk-do	South Korea	7.3°C
47	Moppo	South Korea	6.9°C
48	Sinan	South Korea	6.9°C
49	Eocheongdo Jeollabuk-do	South Korea	6.8°C
50	Boryeong	South Korea	6.7°C

Coldest 10 in South Korea in March

Same data the other way. Helpful if you want to know which South Korea coasts to avoid for swimming in March.

#	Location	Country	March mean
1	Taesal Li	South Korea	5.2°C
2	Hwaseong	South Korea	5.4°C
3	Incheon	South Korea	5.4°C
4	Mohang-ri Chungcheongnam-do	South Korea	5.5°C
5	Ansan	South Korea	5.5°C
6	Goyang	South Korea	5.5°C
7	Seoul	South Korea	5.5°C
8	Daeyeonpyeongdo Incheon	South Korea	5.6°C
9	Anheung Chungcheongnam-do	South Korea	5.9°C
10	Baengnyeongdo Incheon	South Korea	6.1°C