Average sea water temperature in May:
+84.3°F
| Minimum sea water temperature in May: | 89.2°F |
| Maximum sea water temperature in May: | 78.6°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 83.0°F. The highest and lowest sea temperatures during the month were 86.7°F and 81.3°F.
Monthly sea water temperature in Hainan, °F
Which China resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Sanya | 83.1°F | 84.0°F |
| Dadunhai | 83.1°F | 84.0°F |
| Hainan | 83.0°F | 84.3°F |
| Yalong Bay | 82.9°F | 84.0°F |
| Beihai | 81.3°F | 83.5°F |
| Tainan | 80.4°F | 83.0°F |
| Haikou | 79.7°F | 80.6°F |
| Taichung | 78.7°F | 81.6°F |
| Shenzhen | 77.9°F | 81.0°F |
| Guangzhou | 77.8°F | 79.7°F |
| Zhuhai | 77.3°F | 80.8°F |
| Taipei | 77.3°F | 79.7°F |
| Macau | 77.2°F | 80.6°F |
| Hong Kong | 77.0°F | 79.5°F |
| Xiamen | 74.7°F | 77.6°F |
| Suzhou | 70.8°F | 73.5°F |
| Nantong | 67.9°F | 71.5°F |
| Hangzhou | 67.8°F | 71.3°F |
| Shanghai | 67.7°F | 70.9°F |
| Tianjin | 65.8°F | 66.5°F |
Best time for vacation in Hainan
Hainan on a weather map
Places in China:
Name
°F
24 Hours Forecast
Hainan
Local time: 08:12
May 17, sunday
0900
81°F
NW
4 mph
4 mph
1200
88°F
NW
5 mph
5 mph
1500
86°F
NW
6 mph
6 mph
1800
81°F
NW
4 mph
4 mph
2100
75°F
N
5 mph
5 mph
May 18, monday
0000
75°F
NW
4 mph
4 mph
0300
73°F
N
4 mph
4 mph
0600
73°F
NW
4 mph
4 mph
