21.12
sun
sun
Day
75°F
W 11 mph
Precip.
100%
100%
Night
64°F
NW 5 mph
Precip.
0%
0%
22.12
mon
mon
Day
70°F
W 8 mph
Precip.
71%
71%
Night
64°F
NW 3 mph
Precip.
88%
88%
23.12
tue
tue
Day
75°F
W 7 mph
Precip.
61%
61%
Night
66°F
W 4 mph
Precip.
0%
0%
24.12
wed
wed
Day
77°F
W 5 mph
Precip.
75%
75%
Night
66°F
W 5 mph
Precip.
66%
66%
25.12
thu
thu
Day
73°F
W 9 mph
Precip.
100%
100%
Night
66°F
W 6 mph
Precip.
71%
71%
26.12
fri
fri
Day
70°F
W 8 mph
Precip.
70%
70%
Night
63°F
W 4 mph
Precip.
51%
51%
27.12
sat
sat
Day
68°F
W 8 mph
Precip.
68%
68%
Night
59°F
W 3 mph
Precip.
0%
0%
28.12
sun
sun
Day
68°F
W 7 mph
Precip.
24%
24%
Night
57°F
W 2 mph
Precip.
0%
0%
29.12
mon
mon
Day
68°F
W 6 mph
Precip.
0%
0%
Night
57°F
NW 4 mph
Precip.
0%
0%
30.12
tue
tue
Day
68°F
SW 6 mph
Precip.
26%
26%
Night
57°F
E 2 mph
Precip.
0%
0%
31.12
wed
wed
Day
68°F
SW 8 mph
Precip.
0%
0%
Night
57°F
W 2 mph
Precip.
0%
0%
01.01
thu
thu
Day
64°F
W 7 mph
Precip.
30%
30%
Night
57°F
NW 3 mph
Precip.
0%
0%
02.01
fri
fri
Day
70°F
W 5 mph
Precip.
82%
82%
Night
61°F
NW 3 mph
Precip.
27%
27%
03.01
sat
sat
Day
72°F
W 6 mph
Precip.
65%
65%
Night
63°F
W 5 mph
Precip.
40%
40%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 73.0°F. The highest and lowest sea temperatures during the month were 73.6°F and 72.0°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: 08:28
December 21, sunday
0900
70°F
W
6 mph
6 mph
1200
75°F
W
11 mph
11 mph
1500
75°F
W
9 mph
9 mph
1800
70°F
W
7 mph
7 mph
2100
64°F
W
5 mph
5 mph
December 22, monday
0000
64°F
NW
5 mph
5 mph
0300
66°F
W
9 mph
9 mph
0600
64°F
W
7 mph
7 mph
