28.10
wed
wed
Day
77°F
W 8 mph
Precip.
72%
72%
Night
72°F
W 2 mph
Precip.
71%
71%
29.10
thu
thu
Day
79°F
NW 8 mph
Precip.
51%
51%
Night
72°F
NW 4 mph
Precip.
35%
35%
30.10
fri
fri
Day
82°F
W 8 mph
Precip.
19%
19%
Night
72°F
NW 4 mph
Precip.
15%
15%
31.10
sat
sat
Day
81°F
W 8 mph
Precip.
14%
14%
Night
72°F
NW 3 mph
Precip.
24%
24%
01.11
sun
sun
Day
84°F
W 5 mph
Precip.
11%
11%
Night
72°F
NW 3 mph
Precip.
42%
42%
02.11
mon
mon
Day
82°F
W 5 mph
Precip.
36%
36%
Night
73°F
NW 4 mph
Precip.
25%
25%
03.11
tue
tue
Day
79°F
W 6 mph
Precip.
45%
45%
Night
72°F
NW 3 mph
Precip.
43%
43%
Sea water temperature in October, °F
Show year:
2026
2025
2024
The average sea water temperature in October of 2026 was 84.3°F. The highest and lowest sea temperatures during the month were 86.5°F and 82.4°F.
Sea water temperature in November, °F
Show year:
2025
2024
2023
The average sea water temperature in November of 2025 was 76.8°F. The highest and lowest sea temperatures during the month were 78.8°F and 73.8°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: 09:59
October 28, wednesday
1200
77°F
W
8 mph
8 mph
1500
75°F
W
6 mph
6 mph
1800
73°F
W
7 mph
7 mph
2100
72°F
W
5 mph
5 mph
October 29, thursday
0000
72°F
W
2 mph
2 mph
0300
72°F
W
3 mph
3 mph
0600
72°F
NW
4 mph
4 mph
0900
73°F
NW
3 mph
3 mph
