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Hainan weather in September

Weather in Hainan: September

Average day temperature: 86.0°F
Average night temperature: 71.9°F
Sea water temperature: 85.0°F
Number of sunny days: 6 days
Day length: 12.0 - 12.5 hours
Number of rainy days: 16 days
Precipitation totals: 8.1 in.

Air temperature in September, °F

Show year:
2023
2022
2021

The highest day temperature during September of 2023 was 87°F. At the same time the lowest night temperature was 71°F. Day and night temperature averages during September were 84.3°F and 73.6°F.

Sea water temperature in Hainan in September, °F

Show year:
2023
2022
2021

The average sea water temperature in September of 2023 was 85.5°F. The highest and lowest sea temperatures during the month were 87.1°F and 84.0°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Hainan in September is 7.5 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 3.3 mph It makes September lest windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 5.9.

Best time for vacation in Hainan

Sunniest months:
June 13 days
May 12 days
July 10 days
Warmest months:
June 90.1 °F
May 89.4 °F
July 89.3 °F
Warmest sea temp:
July 86.6 °F
June 86.3 °F
August 86.2 °F
Coldest months:
December 69.4 °F
January 69.9 °F
February 74.5 °F
Rainiest months:
August 16 days
September 16 days
July 15 days
Windiest months:
March 4.4 mph
April 4.3 mph
October 4.2 mph

Hainan on a weather map

Hainan
+70°F
N 4 mph
Feels like: +70°F
Precip.: 0%
Places in China:
Name
°F
+52°F
+48°F
+75°F
+81°F
+77°F
+50°F
+79°F
+59°F
+77°F
+70°F
+66°F
+55°F
+64°F
+75°F
+77°F
24 Hours Forecast
Hainan
Local time: 04:38
April 15, monday
0600
70°F
N
4 mph
0900
81°F
N
2 mph
1200
97°F
SW
2 mph
1500
102°F
SW
2 mph
1800
90°F
SE
4 mph
2100
79°F
NE
2 mph
April 16, tuesday
0000
73°F
N
5 mph
0300
72°F
E
4 mph
Units of measurement: °C / °F