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Coldest sea in China in September

316 coastal locations in China ranked by typical September sea temperature, coldest first. Region-wide average in September: 27.1°C.

Coldest in September

Keren

15.2°C September mean in China

Regional September average

27.1°C

across all 316 coastal locations in China

Vs annual mean

+6.7°C

above the year-round regional average

What the China sea feels like in September

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.

China monthly average 12.1°C to 28.2°C
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  • Warmest month August 28.2°C
  • Coldest month February 12.1°C
  • Annual mean 20.5°C
  • Months above 20°C 6 of 12

Where September fits in the year

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

All twelve China month rankings:

China sea temperature map (live)

The map shows today's latest reading at every China location. The list below is based on the typical September 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 China locations in September

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

# Location September mean
1 Keren 15.2°C
2 Jiguan 19.8°C
3 Juexi 19.8°C
4 Shengli 20.3°C
5 Xiaomo 20.6°C
6 Honghai 21.3°C
7 Lian 22.1°C
8 Beishan 22.6°C
9 Chang Zui Liaoning Sheng 23.0°C
10 Changchun 23.0°C
11 Changtu 23.0°C
12 Lushun 23.1°C
13 Nanhuangcheng Dao Shandong Sheng 23.1°C
14 Dachangshandao 23.2°C
15 Jinzhou 23.2°C
16 Liaohe Kou Liaoning 23.2°C
17 Yingkou 23.3°C
18 Changxing Dao Liaoning Sheng 23.3°C
19 Dalian 23.3°C
20 Xizhong Dao Liaoning Sheng 23.3°C
21 Lushunkou Liaoning Sheng 23.3°C
22 Yingzhengzi Wan Liaoning Sheng 23.3°C
23 Xinying 23.4°C
24 Bayuquan Liaoning Sheng 23.5°C
25 Hulu Dao Liaoning Sheng 23.5°C
Show 25 more ▸
26 Xiaochangshan Dao Liaoning Sheng 23.5°C
27 Xingcheng 23.6°C
28 Huludao Gang Liaoning Sheng 23.6°C
29 Lianhe 23.6°C
30 Tuanshan Chiao (Sand Point) Liaoning Sheng 23.6°C
31 Dalian Gang (Dairen Ko) Liaoning 23.6°C
32 Laohutan-A Liaoning Sheng 23.6°C
33 Xiaobing Dao Liaoning Sheng 23.6°C
34 Hsinlutu Liaoning Sheng 23.8°C
35 Yu Yan Shandong Sheng 23.8°C
36 Weihai 23.8°C
37 Haibin 23.9°C
38 Qinhuangdao 23.9°C
39 Wanghai 23.9°C
40 Beidaihe 23.9°C
41 Longxu Wan Shandong Sheng 23.9°C
42 Malan Wan Shandong Sheng 23.9°C
43 Huanhaisi Dizui Liaoning Sheng 23.9°C
44 Tanglang Dao Shandong Sheng 23.9°C
45 Dapuhe Kou Hebei Sheng 23.9°C
46 Jingtang Hebei Sheng 23.9°C
47 Jiming Dao Shandong Sheng 24.0°C
48 Yantai 24.1°C
49 Longkou 24.1°C
50 Weihai Gang Shandong 24.1°C

Warmest 10 in China in September

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

# Location September mean
1 Chengjiang 30.0°C
2 Guanbu 30.0°C
3 Guandu 30.0°C
4 Beihai Gang Guangxi Zhuangzuzizhiqu 30.0°C
5 Fangcheng Gang Guangxi Zhuangzuzizhiqu 30.0°C
6 Caotan 29.9°C
7 Cheban 29.9°C
8 Yingzai 29.9°C
9 Beihai 29.9°C
10 Dadunhai 29.9°C

More on this region