Warmest sea in South Korea in August

62 coastal locations in South Korea ranked by their typical August sea temperature. Region-wide average in August: 26.2°C. The top of the list is where to find the warmest swimming this month.

Warmest in August

Seogwipo

28.6°C August mean in South Korea

Regional August average

26.2°C

across all 62 coastal locations in South Korea

Vs annual mean

+9.0°C

above the year-round regional average

What the South Korea sea feels like in August

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

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 August fits in the year

August 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 August 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 August

Sorted by the typical August 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	August mean
1	Seogwipo Jeju-do	South Korea	28.6°C
2	Hwasun Jeju-do	South Korea	28.6°C
3	Jukdo Jeju-do	South Korea	28.4°C
4	Udo Sudo Jeju-do	South Korea	28.1°C
5	Jeju	South Korea	28.0°C
6	Jejudo	South Korea	28.0°C
7	Busan	South Korea	27.4°C
8	Chujado Jeju-do	South Korea	27.4°C
9	Chinhae	South Korea	27.3°C
10	Masan	South Korea	27.3°C
11	Geoje	South Korea	27.3°C
12	Kyosai	South Korea	27.3°C
13	Boryeong	South Korea	27.1°C
14	Kunsan	South Korea	27.1°C
15	Jisepo Gyeongsangnam-do	South Korea	27.0°C
16	Sinhyeon	South Korea	27.0°C
17	Ulsan	South Korea	27.0°C
18	Eocheongdo Jeollabuk-do	South Korea	27.0°C
19	Gadeokdo Busan	South Korea	27.0°C
20	Reisui	South Korea	27.0°C
21	Wido Jeollabuk-do	South Korea	26.9°C
22	Yokjido Gyeongsangnam-do	South Korea	26.9°C
23	Gwanyang Jeollanam-do	South Korea	26.7°C
24	Yeosu Jeollanam-do	South Korea	26.7°C
25	Geomundo Jeollanam-do	South Korea	26.7°C

Show 25 more ▸

26	Sunchun	South Korea	26.7°C
27	Cheongsando Jeollanam-do	South Korea	26.5°C
28	Wando Jeollanam-do	South Korea	26.5°C
29	Soando Jeollanam-do	South Korea	26.4°C
30	Ulleungdo Gyeongsangbuk-do	South Korea	26.3°C
31	Daeheuksando Jeollanam-do	South Korea	26.3°C
32	Narodo Jeollanam-do	South Korea	26.2°C
33	Geumdangdo Jeollanam-do	South Korea	26.1°C
34	Daeyeonpyeongdo Incheon	South Korea	25.9°C
35	Gampo Gyeongsangbuk-do	South Korea	25.9°C
36	Moppo	South Korea	25.7°C
37	Sinan	South Korea	25.7°C
38	Sokcho	South Korea	25.6°C
39	Tonghae	South Korea	25.6°C
40	Gangneung	South Korea	25.5°C
41	Jumunjin Gangwon-do	South Korea	25.5°C
42	Anheung Chungcheongnam-do	South Korea	25.5°C
43	Yongpyong	South Korea	25.5°C
44	Mukho Gangwon-do	South Korea	25.5°C
45	Jukbyeon Gyeongsangbuk-do	South Korea	25.4°C
46	Hoko	South Korea	25.3°C
47	Pohang	South Korea	25.3°C
48	Ganggu Gyeongsangnam-do	South Korea	25.0°C
49	Baengnyeongdo Incheon	South Korea	25.0°C
50	Daecheongdo Incheon	South Korea	25.0°C

Coldest 10 in South Korea in August

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

#	Location	Country	August mean
1	Taesal Li	South Korea	24.2°C
2	Hwaseong	South Korea	24.3°C
3	Incheon	South Korea	24.3°C
4	Byeokpajin Jeollanam-do	South Korea	24.6°C
5	Eoranjin Jeollanam-do	South Korea	24.6°C
6	Modo Jeollanam-do	South Korea	24.6°C
7	Sangmado Jeollanam-do	South Korea	24.6°C
8	Ansan	South Korea	24.7°C
9	Goyang	South Korea	24.7°C
10	Seoul	South Korea	24.7°C