Current sea water temperature:
+72.7°F
| Minimum sea water temperature in December: | 80.6°F |
| Maximum sea water temperature in December: | 66.7°F |
| Average sea water temperature in December: | 72.9°F |
| more information | |
14 days
forecast
forecast
| Hainan |
monthly
weather
weather
| Hainan |
Sea water temperature for the last 10 days:
| December 18 | 72.7°F | December 13 | 72.9°F |
| December 17 | 72.5°F | December 12 | 72.9°F |
| December 16 | 72.1°F | December 11 | 73.4°F |
| December 15 | 72.3°F | December 10 | 73.4°F |
| December 14 | 72.9°F | December 9 | 73.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Hainan?
Based on the data about daily sea water temperature for the last three years the warmest sea in Hainan was noticed in July, June and August.
Monthly Sea Temperatures in Hainan, °F
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.1°F. The highest and lowest sea temperatures during the month were 87.6°F and 85.1°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 86.1°F. The highest and lowest sea temperatures during the month were 87.1°F and 85.5°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 86.2°F. The highest and lowest sea temperatures during the month were 87.6°F and 84.4°F.
current
weather
weather
| Hainan |
weather in
December
December
| Hainan |
Best time for vacation in Hainan
Hainan on a weather map
Places in China:
Name
°F
24 Hours Forecast
Hainan
Local time: 17:26
December 18, thursday
1800
70°F
W
6 mph
6 mph
2100
64°F
NW
5 mph
5 mph
December 19, friday
0000
63°F
NW
3 mph
3 mph
0300
63°F
N
3 mph
3 mph
0600
63°F
NW
2 mph
2 mph
0900
68°F
W
3 mph
3 mph
1200
77°F
W
6 mph
6 mph
1500
77°F
W
6 mph
6 mph
