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September weather forecast in Hilton Head Island

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

31 August, sun

	761 mmHg		82%
	5.2 m/s		+29

31 August, Sunday. day, 29°; night, 25°; rain

1 September, mon

	762 mmHg		82%
	5.2 m/s		+28

1 September, Monday. day, 28°; night, 25°; rain

2 September, tue

	761 mmHg		82%
	5.6 m/s		+29

2 September, Tuesday. day, 28°; night, 24°; rain

3 September, wed

	761 mmHg		79%
	5.6 m/s		+29

3 September, Wednesday. day, 29°; night, 24°; rain

4 September, thu

	761 mmHg		78%
	5.8 m/s		+29

4 September, Thursday. day, 29°; night, 24°; rain

5 September, fri

	761 mmHg		79%
	6 m/s		+28

5 September, Friday. day, 28°; night, 24°; rain

6 September, sat

	761 mmHg		80%
	6.3 m/s		+29

6 September, Saturday. day, 28°; night, 24°; rain

7 September, sun

	761 mmHg		80%
	5.8 m/s		+29

7 September, Sunday. day, 28°; night, 24°; rain

8 September, mon

	760 mmHg		81%
	5.3 m/s		+29

8 September, Monday. day, 28°; night, 24°; rain

9 September, tue

	761 mmHg		80%
	5.3 m/s		+28

9 September, Tuesday. day, 28°; night, 24°; rain

10 September, wed

	762 mmHg		78%
	5.1 m/s		+29

10 September, Wednesday. day, 28°; night, 24°; clear

11 September, thu

	762 mmHg		78%
	5.5 m/s		+29

11 September, Thursday. day, 28°; night, 24°; clear

12 September, fri

	762 mmHg		79%
	5.5 m/s		+28

12 September, Friday. day, 28°; night, 24°; rain

13 September, sat

	761 mmHg		79%
	5 m/s		+29

13 September, Saturday. day, 28°; night, 24°; partly cloudy

14 September, sun

	761 mmHg		79%
	5.5 m/s		+28

14 September, Sunday. day, 28°; night, 23°; partly cloudy

15 September, mon

	761 mmHg		79%
	5.9 m/s		+28

15 September, Monday. day, 28°; night, 23°; rain

16 September, tue

	762 mmHg		77%
	5.9 m/s		+28

16 September, Tuesday. day, 28°; night, 23°; clear

17 September, wed

	761 mmHg		78%
	5.6 m/s		+28

17 September, Wednesday. day, 27°; night, 23°; rain

18 September, thu

	761 mmHg		79%
	5.3 m/s		+28

18 September, Thursday. day, 27°; night, 23°; rain

19 September, fri

	762 mmHg		78%
	5.4 m/s		+28

19 September, Friday. day, 27°; night, 22°; clear

20 September, sat

	762 mmHg		80%
	5.3 m/s		+28

20 September, Saturday. day, 27°; night, 22°; clear

21 September, sun

	762 mmHg		80%
	5.2 m/s		+28

21 September, Sunday. day, 27°; night, 23°; partly cloudy

22 September, mon

	762 mmHg		80%
	5.2 m/s		+27

22 September, Monday. day, 27°; night, 23°; rain

23 September, tue

	762 mmHg		77%
	5.4 m/s		+28

23 September, Tuesday. day, 27°; night, 22°; clear

24 September, wed

	762 mmHg		79%
	5.3 m/s		+28

24 September, Wednesday. day, 26°; night, 22°; clear

25 September, thu

	761 mmHg		79%
	5.4 m/s		+27

25 September, Thursday. day, 27°; night, 22°; partly cloudy

26 September, fri

	761 mmHg		82%
	5.4 m/s		+27

26 September, Friday. day, 27°; night, 23°; rain

27 September, sat

	760 mmHg		80%
	5.9 m/s		+27

27 September, Saturday. day, 27°; night, 23°; overcast

28 September, sun

	760 mmHg		79%
	5.4 m/s		+27

28 September, Sunday. day, 27°; night, 22°; clear

29 September, mon

	761 mmHg		77%
	5.5 m/s		+27

29 September, Monday. day, 27°; night, 22°; clear

30 September, tue

	761 mmHg		78%
	5.8 m/s		+27

30 September, Tuesday. day, 26°; night, 21°; clear

1 October, wed

	761 mmHg		75%
	5.5 m/s		+27

1 October, Wednesday. day, 26°; night, 21°; clear

2 October, thu

	762 mmHg		75%
	5.4 m/s		+27

2 October, Thursday. day, 26°; night, 21°; clear

3 October, fri

	763 mmHg		76%
	5.1 m/s		+26

3 October, Friday. day, 25°; night, 20°; partly cloudy

4 October, sat

	763 mmHg		77%
	5.2 m/s		+26

4 October, Saturday. day, 26°; night, 21°; rain

Average data for 10 years

Hilton Head Island September

10

sunny days

15

days with precipitation

7

cloudy days

10 sunny days; 15 days with precipitation; 7 cloudy days;

79

%

air humidity

4

m/s

WindSE

132

mm of precipitation

(12% of annual average)

+28

°C

Water temperature

air humidity 79%; 132 millimeters of precipitation (12% of annual average); Wind south-easterly 4 Meters per second; Water temperature +28°

Weather graphs for September

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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1

Average data for 10 years

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Daytime temperature

Night-time temperature

Cities near you

Orlando
Charlotte
Atlanta
Palm Coast
Jacksonville
Columbia
Charleston
Jacksonville Beach
Atlantic Beach

Cities with similar weather in September

Antalya
Alanya
Side
Belek
Marmaris
Larnaca
Tel Aviv
Jerba
Rhodes

The weather forecast for September 2025 is based on historical data from the past 10 years.

In September, the weather in Hilton Head Island is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Hilton Head Island has 15 rainy, 10 sunny, 4 partly cloudy, and 1 cloudy day in September. The rains are usually heavy.

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