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September weather forecast in Key West

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		74%
	7.4 m/s		+30

31 August, Sunday. day, 30°; night, 29°; clear

1 September, mon

	761 mmHg		75%
	5.5 m/s		+30

1 September, Monday. day, 29°; night, 29°; partly cloudy

2 September, tue

	761 mmHg		74%
	5.4 m/s		+30

2 September, Tuesday. day, 29°; night, 29°; partly cloudy

3 September, wed

	761 mmHg		74%
	4.5 m/s		+30

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

4 September, thu

	761 mmHg		74%
	5.5 m/s		+30

4 September, Thursday. day, 30°; night, 29°; rain

5 September, fri

	761 mmHg		74%
	5.4 m/s		+30

5 September, Friday. day, 29°; night, 29°; partly cloudy

6 September, sat

	761 mmHg		73%
	4.8 m/s		+30

6 September, Saturday. day, 29°; night, 28°; rain

7 September, sun

	760 mmHg		73%
	5.5 m/s		+30

7 September, Sunday. day, 29°; night, 29°; clear

8 September, mon

	759 mmHg		73%
	8.8 m/s		+30

8 September, Monday. day, 29°; night, 29°; rain

9 September, tue

	757 mmHg		74%
	10.1 m/s		+30

9 September, Tuesday. day, 29°; night, 28°; rain

10 September, wed

	760 mmHg		74%
	7.5 m/s		+30

10 September, Wednesday. day, 29°; night, 28°; rain

11 September, thu

	761 mmHg		74%
	5.6 m/s		+30

11 September, Thursday. day, 29°; night, 29°; clear

12 September, fri

	760 mmHg		73%
	5.5 m/s		+30

12 September, Friday. day, 29°; night, 28°; clear

13 September, sat

	761 mmHg		74%
	5.8 m/s		+30

13 September, Saturday. day, 29°; night, 29°; partly cloudy

14 September, sun

	761 mmHg		74%
	5.6 m/s		+30

14 September, Sunday. day, 29°; night, 29°; rain

15 September, mon

	761 mmHg		74%
	5 m/s		+30

15 September, Monday. day, 29°; night, 28°; rain

16 September, tue

	761 mmHg		74%
	5 m/s		+30

16 September, Tuesday. day, 29°; night, 28°; partly cloudy

17 September, wed

	760 mmHg		70%
	5 m/s		+30

17 September, Wednesday. day, 29°; night, 28°; clear

18 September, thu

	760 mmHg		73%
	5.1 m/s		+30

18 September, Thursday. day, 29°; night, 28°; rain

19 September, fri

	760 mmHg		72%
	5.8 m/s		+30

19 September, Friday. day, 29°; night, 28°; partly cloudy

20 September, sat

	760 mmHg		72%
	5.3 m/s		+30

20 September, Saturday. day, 29°; night, 28°; partly cloudy

21 September, sun

	760 mmHg		73%
	5.8 m/s		+30

21 September, Sunday. day, 29°; night, 28°; rain

22 September, mon

	760 mmHg		75%
	5.3 m/s		+30

22 September, Monday. day, 29°; night, 28°; clear

23 September, tue

	760 mmHg		75%
	5.4 m/s		+30

23 September, Tuesday. day, 29°; night, 28°; clear

24 September, wed

	760 mmHg		74%
	5.8 m/s		+30

24 September, Wednesday. day, 29°; night, 28°; clear

25 September, thu

	760 mmHg		75%
	6 m/s		+30

25 September, Thursday. day, 29°; night, 28°; clear

26 September, fri

	759 mmHg		75%
	5 m/s		+30

26 September, Friday. day, 29°; night, 28°; clear

27 September, sat

	759 mmHg		75%
	5 m/s		+30

27 September, Saturday. day, 29°; night, 28°; rain

28 September, sun

	759 mmHg		75%
	4.8 m/s		+30

28 September, Sunday. day, 29°; night, 28°; clear

29 September, mon

	759 mmHg		73%
	4.9 m/s		+30

29 September, Monday. day, 29°; night, 28°; rain

30 September, tue

	759 mmHg		70%
	5.4 m/s		+30

30 September, Tuesday. day, 29°; night, 28°; rain

1 October, wed

	759 mmHg		73%
	6.1 m/s		+30

1 October, Wednesday. day, 28°; night, 28°; partly cloudy

2 October, thu

	759 mmHg		70%
	7 m/s		+29

2 October, Thursday. day, 28°; night, 28°; rain

3 October, fri

	760 mmHg		72%
	7.5 m/s		+29

3 October, Friday. day, 28°; night, 28°; rain

4 October, sat

	760 mmHg		72%
	8.1 m/s		+29

4 October, Saturday. day, 28°; night, 27°; clear

Average data for 10 years

Key West September

10

sunny days

13

days with precipitation

7

cloudy days

10 sunny days; 13 days with precipitation; 7 cloudy days;

74

%

air humidity

4.5

m/s

WindE

86

mm of precipitation

(14% of annual average)

+30

°C

Water temperature

air humidity 74%; 86 millimeters of precipitation (14% of annual average); Wind easterly 4.5 Meters per second; Water temperature +30°

Weather graphs for September

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

E

E

E

E

E

E

E

E

E

SE

SE

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

N

NE

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Daytime temperature

Night-time temperature

Cities near you

Varadero
Havana
Miami
Cayo Coco
Tampa
Cayo Guillermo
Miami Beach
Madeira Beach
Hollywood

Cities with similar weather in September

Pattaya
Nha Trang
Sanya
Hurgada
Bangkok
Punta Cana
Cancun
Hong Kong
Boca Chica

The weather forecast for September 2024 is based on historical data from the past 10 years.

September in Key West is the rainiest and the cloudiest month of the year. In September, the weather in Key West is typically hot. Average daily high temperature in September is about 29 degrees above zero. On average, Key West has 13 rainy, 10 sunny, and 7 partly cloudy days in September. The rains are usually heavy. September as well as October is considered the most uncomfortable time to visit Key West.

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