Average sea water temperature in September:
+85.0°F
| Minimum sea water temperature in September: | 88.0°F |
| Maximum sea water temperature in September: | 81.3°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 84.5°F. The highest and lowest sea temperatures during the month were 85.6°F and 83.5°F.
Monthly sea water temperature in Hainan, °F
Which China resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Beihai | 86.0°F | 86.0°F |
| Taichung | 85.9°F | 86.0°F |
| Shanghai | 85.4°F | 85.0°F |
| Tainan | 85.4°F | 86.2°F |
| Zhuhai | 85.3°F | 85.4°F |
| Suzhou | 85.2°F | 84.6°F |
| Nantong | 85.1°F | 85.4°F |
| Taipei | 85.1°F | 85.0°F |
| Macau | 85.0°F | 85.4°F |
| Xiamen | 85.0°F | 84.0°F |
| Shenzhen | 85.0°F | 84.7°F |
| Guangzhou | 84.8°F | 85.5°F |
| Hong Kong | 84.5°F | 84.3°F |
| Hainan | 84.5°F | 85.5°F |
| Haikou | 84.3°F | 85.0°F |
| Yalong Bay | 84.2°F | 85.5°F |
| Sanya | 84.1°F | 85.5°F |
| Dadunhai | 84.1°F | 85.5°F |
| Hangzhou | 84.0°F | 83.6°F |
| Ningbo | 83.8°F | 83.4°F |
Best time for vacation in Hainan
Hainan on a weather map
Places in China:
Name
°F
24 Hours Forecast
Hainan
Local time: 14:27
December 25, thursday
1500
64°F
S
7 mph
7 mph
1800
61°F
S
6 mph
6 mph
2100
59°F
SW
6 mph
6 mph
December 26, friday
0000
57°F
SW
4 mph
4 mph
0300
57°F
SW
6 mph
6 mph
0600
57°F
W
4 mph
4 mph
0900
59°F
W
5 mph
5 mph
1200
68°F
W
8 mph
8 mph
