The China resorts with the warmest sea water temperature in May are Hainan, Dadunhai and Sanya.
Below you can see a list of all popular China resorts and information about sea water temperature in May for the last two years.
| Resort Name | May 2026 | May 2025 | May 2024 |
|---|---|---|---|
| Hainan | 88.7°F | 88.1°F | 88.6°F |
| Dadunhai | 87.8°F | 87.8°F | 86.9°F |
| Sanya | 87.8°F | 87.8°F | 86.9°F |
| Yalong Bay | 87.6°F | 87.8°F | 86.7°F |
| Beihai | 87.4°F | 87.2°F | 87.3°F |
| Haikou | 85.2°F | 84.0°F | 85.4°F |
| Tainan | 85.1°F | 86.6°F | 85.5°F |
| Taichung | 83.8°F | 85.1°F | 83.5°F |
| Shenzhen | 83.0°F | 84.5°F | 81.8°F |
| Guangzhou | 82.7°F | 83.0°F | 80.9°F |
| Zhuhai | 82.4°F | 84.2°F | 81.5°F |
| Macau | 82.2°F | 83.9°F | 81.6°F |
| Hong Kong | 81.9°F | 82.8°F | 81.4°F |
| Taipei | 81.6°F | 83.0°F | 82.0°F |
| Xiamen | 79.8°F | 80.7°F | 78.3°F |
| Suzhou | 76.0°F | 76.1°F | 74.4°F |
| Hangzhou | 73.3°F | 73.6°F | 68.9°F |
| Nantong | 72.5°F | 73.9°F | 73.3°F |
| Shanghai | 72.4°F | 73.3°F | 72.5°F |
| Ningbo | 69.7°F | 69.3°F | 68.4°F |
| Tianjin | 68.9°F | 68.3°F | 68.9°F |
| Beidaihe | 62.8°F | 61.9°F | 59.9°F |
| Quingdao | 62.0°F | 62.0°F | 61.9°F |
| Qinhuangdao | 61.5°F | 60.1°F | 58.8°F |
| Yantai | 59.6°F | 59.1°F | 60.2°F |
| Weihai | 58.7°F | 57.4°F | 58.7°F |
| Dalian | 58.4°F | 57.4°F | 57.6°F |
Please see following sea water temperature averages charts for the warmest China resorts in May.
You can also get the same information for the every other month of the year when the average sea water temperature is greater then 70°F.
