15.09
tue
tue
Day
81°F
NW 1 mph
Precip.
42%
42%
Night
79°F
W 7 mph
Precip.
28%
28%
16.09
wed
wed
Day
84°F
SW 10 mph
Precip.
36%
36%
Night
77°F
NW 6 mph
Precip.
22%
22%
17.09
thu
thu
Day
84°F
W 11 mph
Precip.
22%
22%
Night
77°F
NW 7 mph
Precip.
38%
38%
18.09
fri
fri
Day
84°F
SW 16 mph
Precip.
17%
17%
Night
79°F
W 11 mph
Precip.
62%
62%
19.09
sat
sat
Day
84°F
W 11 mph
Precip.
36%
36%
Night
79°F
NW 7 mph
Precip.
15%
15%
20.09
sun
sun
Day
84°F
SW 11 mph
Precip.
30%
30%
Night
77°F
NW 6 mph
Precip.
14%
14%
21.09
mon
mon
Day
86°F
SW 7 mph
Precip.
11%
11%
Night
77°F
NW 6 mph
Precip.
16%
16%
22.09
tue
tue
Day
86°F
W 7 mph
Precip.
29%
29%
Night
79°F
NW 6 mph
Precip.
26%
26%
23.09
wed
wed
Day
84°F
W 11 mph
Precip.
13%
13%
Night
77°F
W 7 mph
Precip.
21%
21%
24.09
thu
thu
Day
84°F
SW 13 mph
Precip.
28%
28%
Night
75°F
NW 6 mph
Precip.
16%
16%
25.09
fri
fri
Day
84°F
W 11 mph
Precip.
12%
12%
Night
77°F
NW 6 mph
Precip.
12%
12%
26.09
sat
sat
Day
84°F
W 9 mph
Precip.
48%
48%
Night
77°F
NW 7 mph
Precip.
15%
15%
27.09
sun
sun
Day
86°F
W 4 mph
Precip.
18%
18%
Night
77°F
NW 9 mph
Precip.
16%
16%
28.09
mon
mon
Day
88°F
NW 11 mph
Precip.
7%
7%
Night
81°F
NW 12 mph
Precip.
11%
11%
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 84.3°F. The highest and lowest sea temperatures during the month were 85.1°F and 82.6°F.
Air temperature in Haikou, °F
Precipitation total in Haikou, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Haikou
Haikou on a weather map
Places in China:
Name
°F
24 Hours Forecast
Haikou
Local time: 02:17
September 15, tuesday
0300
77°F
W
5 mph
5 mph
0600
77°F
W
2 mph
2 mph
0900
79°F
N
2 mph
2 mph
1200
81°F
NW
1 mph
1 mph
1500
84°F
SW
4 mph
4 mph
1800
81°F
W
6 mph
6 mph
2100
79°F
W
6 mph
6 mph
September 16, wednesday
0000
79°F
W
7 mph
7 mph
