Measurements:
°C
°F
CURRENT WEATHER
07:24
Hainan
80°F
N 4 mph
Feels like: 86°F
Precip: 15%
World Resorts China Hainan Weather

7 Day Weather Forecast

09.30
wed
DAY
92°F
SW 4 mph
precip
12%
NIGHT
80°F
N 3 mph
precip
15%
10.01
thu
DAY
90°F
W 2 mph
precip
8%
NIGHT
80°F
N 2 mph
precip
20%
10.02
fri
DAY
90°F
W 2 mph
precip
3%
NIGHT
78°F
N 3 mph
precip
25%
10.03
sat
DAY
88°F
W 2 mph
precip
14%
NIGHT
78°F
NW 3 mph
precip
22%
10.04
sun
DAY
88°F
W 4 mph
precip
15%
NIGHT
78°F
NW 2 mph
precip
19%
10.05
mon
DAY
82°F
NW 6 mph
precip
57%
NIGHT
72°F
NE 3 mph
precip
67%
10.06
tue
DAY
76°F
S 4 mph
precip
51%
NIGHT
74°F
NW 2 mph
precip
17%

Hainan Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Hainan was 28.3°F. The maximum and minimum values were 27.5°F and 29.7°F respectively.

Hainan on the Weather Map

Best Time to Visit Hainan
The most sunny months:
June 12 days
April 12 days
March 11 days
The most warm months:
June 94.5 °F
May 93.2 °F
July 93.0 °F
Warmest sea temperature:
July 90.7 °F
June 90.5 °F
August 90.3 °F
The most cold months:
December 71.7 °F
January 72.3 °F
February 77.5 °F
The most rainy months:
August 14 days
July 14 days
May 14 days
The most windy months:
April 4 mph
March 4 mph
October 4 mph
more details