18.12
thu
thu
Day
73°F
W 8 mph
Precip.
74%
74%
Night
63°F
NW 3 mph
Precip.
0%
0%
19.12
fri
fri
Day
77°F
W 6 mph
Precip.
70%
70%
Night
66°F
NW 4 mph
Precip.
0%
0%
20.12
sat
sat
Day
77°F
W 7 mph
Precip.
100%
100%
Night
66°F
W 4 mph
Precip.
100%
100%
21.12
sun
sun
Day
77°F
W 11 mph
Precip.
100%
100%
Night
64°F
NW 4 mph
Precip.
0%
0%
22.12
mon
mon
Day
73°F
W 9 mph
Precip.
100%
100%
Night
63°F
NW 5 mph
Precip.
0%
0%
23.12
tue
tue
Day
75°F
W 7 mph
Precip.
82%
82%
Night
64°F
W 4 mph
Precip.
41%
41%
24.12
wed
wed
Day
73°F
W 8 mph
Precip.
53%
53%
Night
61°F
NW 4 mph
Precip.
0%
0%
25.12
thu
thu
Day
70°F
W 7 mph
Precip.
79%
79%
Night
63°F
W 4 mph
Precip.
74%
74%
26.12
fri
fri
Day
72°F
W 8 mph
Precip.
61%
61%
Night
61°F
W 3 mph
Precip.
81%
81%
27.12
sat
sat
Day
72°F
W 7 mph
Precip.
51%
51%
Night
61°F
NW 4 mph
Precip.
0%
0%
28.12
sun
sun
Day
72°F
W 8 mph
Precip.
0%
0%
Night
63°F
NW 4 mph
Precip.
0%
0%
29.12
mon
mon
Day
73°F
W 7 mph
Precip.
0%
0%
Night
63°F
NW 4 mph
Precip.
0%
0%
30.12
tue
tue
Day
75°F
W 6 mph
Precip.
67%
67%
Night
64°F
NW 4 mph
Precip.
59%
59%
31.12
wed
wed
Day
73°F
NW 11 mph
Precip.
0%
0%
Night
64°F
NW 7 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 73.1°F. The highest and lowest sea temperatures during the month were 73.6°F and 72.1°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 67.8°F. The highest and lowest sea temperatures during the month were 69.1°F and 66.6°F.
Air temperature in Hainan, °F
Precipitation total in Hainan, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Hainan
Hainan on a weather map
Places in China:
Name
°F
24 Hours Forecast
Hainan
Local time: 16:12
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
