Coldest sea in China

316 coastal locations in China ranked by year-round average sea temperature, coldest first. The regional average is 20.5°C. The top of the list is where the water stays cold all year. The contrast list at the bottom shows the warmest coasts for context.

Coldest location

Jiguan

Year-round average 9.3°C in China

Regional average

20.5°C

across all 316 China coastal locations

Coldest month

February

12.1°C region-wide average

China monthly average 12.1°C to 28.2°C

Warmest month August 28.2°C
Coldest month February 12.1°C
Annual mean 20.5°C
Months above 20°C 6 of 12

Month by month across China

Sea temperatures in China swing from 12.1°C in February to 28.2°C in August on average across every coast we track. That spread of 16°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

China sea temperature map

Today's pin colours show the latest daily reading at every China location we track. Cool blues cluster around the high-latitude coasts.

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 locations in China

Coastal locations across China sorted by year-round average, coldest first. Honest cold-water swimming country. Click any place for its 30-day chart, monthly profile, and 10-year history.

#	Location	Country	Annual mean	Latest
1	Jiguan	China	9.3°C	11.4°C
2	Juexi	China	9.3°C	11.4°C
3	Xiaomo	China	11.1°C	9.4°C
4	Shengli	China	11.8°C	10.6°C
5	Yingkou	China	12.3°C	17.1°C
6	Changchun	China	12.4°C	17.9°C
7	Changtu	China	12.4°C	17.9°C
8	Jinzhou	China	12.5°C	16.5°C
9	Bayuquan Liaoning Sheng	China	12.6°C	17.1°C
10	Liaohe Kou Liaoning	China	12.6°C	17.9°C
11	Huludao Gang Liaoning Sheng	China	12.6°C	14.7°C
12	Lianhe	China	12.6°C	14.5°C
13	Xingcheng	China	12.7°C	13.5°C
14	Changxing Dao Liaoning Sheng	China	13.1°C	12.7°C
15	Keren	China	13.1°C	11.3°C
16	Tuanshan Chiao (Sand Point) Liaoning Sheng	China	13.2°C	14.0°C
17	Hsinlutu Liaoning Sheng	China	13.2°C	14.5°C
18	Dachangshandao	China	13.5°C	12.1°C
19	Xizhong Dao Liaoning Sheng	China	13.5°C	13.9°C
20	Huanhaisi Dizui Liaoning Sheng	China	13.5°C	14.9°C
21	Beidaihe	China	13.5°C	15.5°C
22	Lushun	China	13.5°C	13.8°C
23	Dapuhe Kou Hebei Sheng	China	13.6°C	15.5°C
24	Haibin	China	13.6°C	15.0°C
25	Qinhuangdao	China	13.6°C	15.0°C

Show 25 more ▸

26	Wanghai	China	13.6°C	15.0°C
27	Xiaochangshan Dao Liaoning Sheng	China	13.6°C	12.1°C
28	Dalian	China	13.6°C	14.7°C
29	Hulu Dao Liaoning Sheng	China	13.7°C	15.1°C
30	Beishan	China	13.8°C	12.9°C
31	Chang Zui Liaoning Sheng	China	13.9°C	12.0°C
32	Lian	China	13.9°C	11.8°C
33	Jingtang Hebei Sheng	China	14.0°C	15.1°C
34	Nanhuangcheng Dao Shandong Sheng	China	14.0°C	11.9°C
35	Lushunkou Liaoning Sheng	China	14.2°C	13.0°C
36	Yingzhengzi Wan Liaoning Sheng	China	14.2°C	13.0°C
37	Yantai	China	14.2°C	15.2°C
38	Tanglang Dao Shandong Sheng	China	14.2°C	15.6°C
39	Longkou	China	14.3°C	16.4°C
40	Yantai Gang Shandong	China	14.3°C	15.2°C
41	Caofeidian Hebei Sheng	China	14.3°C	16.1°C
42	Dalian Gang (Dairen Ko) Liaoning	China	14.3°C	13.7°C
43	Laohutan-A Liaoning Sheng	China	14.3°C	13.7°C
44	Xiaobing Dao Liaoning Sheng	China	14.3°C	13.7°C
45	Xinying	China	14.3°C	16.1°C
46	Longxu Wan Shandong Sheng	China	14.3°C	13.4°C
47	Malan Wan Shandong Sheng	China	14.3°C	13.4°C
48	Longkou Gang Shandong Sheng	China	14.4°C	16.4°C
49	Weihai Gang Shandong	China	14.4°C	14.7°C
50	Jiming Dao Shandong Sheng	China	14.5°C	14.3°C

Warmest 10 in China for contrast

Same data flipped. Useful if you want to know which China coasts stay warmest year-round before you commit to a cold-water swim trip.

#	Location	Country	Annual mean
1	Scarborough Shoal Hainan	China	28.9°C
2	Baoshan	China	28.7°C
3	Paracel Islands Hainan	China	27.8°C
4	Jiadong	China	27.4°C
5	Leluo	China	27.3°C
6	Yinggehai	China	27.3°C
7	Tianya	China	27.3°C
8	Yalong Bay	China	27.3°C
9	Yalong Wan	China	27.3°C
10	Sanya Gang Hainan	China	27.2°C