In May warmest sea in China is usually observed in the following locations: Hainan, Sanya, Dadunhai.
Table below shows the average sea water temperature for marine resorts of China in May for the last three years.
| Place name | May 2026 | May 2025 | May 2024 |
|---|---|---|---|
| Hainan | 84.9°F | 84.3°F | 84.7°F |
| Sanya | 84.1°F | 84.0°F | 83.2°F |
| Dadunhai | 84.1°F | 84.0°F | 83.2°F |
| Yalong Bay | 83.9°F | 84.0°F | 83.0°F |
| Beihai | 83.8°F | 83.5°F | 83.6°F |
| Haikou | 81.8°F | 80.6°F | 81.9°F |
| Tainan | 81.6°F | 83.0°F | 81.9°F |
| Taichung | 80.5°F | 81.6°F | 80.1°F |
| Shenzhen | 79.9°F | 81.0°F | 78.7°F |
| Guangzhou | 79.6°F | 79.7°F | 77.8°F |
| Zhuhai | 79.4°F | 80.8°F | 78.4°F |
| Macau | 79.3°F | 80.6°F | 78.4°F |
| Hong Kong | 78.9°F | 79.5°F | 78.2°F |
| Taipei | 78.5°F | 79.7°F | 78.8°F |
| Xiamen | 76.9°F | 77.6°F | 75.4°F |
| Suzhou | 73.5°F | 73.5°F | 72.0°F |
| Hangzhou | 71.1°F | 71.3°F | 67.0°F |
| Nantong | 70.4°F | 71.5°F | 71.0°F |
| Shanghai | 70.3°F | 70.9°F | 70.2°F |
| Ningbo | 67.9°F | 67.4°F | 66.6°F |
| Tianjin | 67.3°F | 66.5°F | 67.0°F |
| Beidaihe | 61.8°F | 60.7°F | 58.9°F |
| Quingdao | 61.0°F | 60.8°F | 60.8°F |
| Qinhuangdao | 60.6°F | 59.1°F | 58.0°F |
| Yantai | 58.8°F | 58.2°F | 59.2°F |
| Weihai | 57.9°F | 56.7°F | 57.8°F |
| Dalian | 57.8°F | 56.7°F | 56.9°F |
Charts below show average sea water temperature for China resorts with the warmest sea in May.
You can also check other months of the year to see sea temperature of China resorts at that time.
Places in China:
Name
°F
