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September weather forecast in Falmouth

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

	762 mmHg		76%
	5.2 m/s		+23

31 August, Sunday. day, 24°; night, 19°; partly cloudy

1 September, mon

	762 mmHg		74%
	4.8 m/s		+23

1 September, Monday. day, 24°; night, 19°; partly cloudy

2 September, tue

	762 mmHg		76%
	5.1 m/s		+22

2 September, Tuesday. day, 23°; night, 17°; partly cloudy

3 September, wed

	761 mmHg		78%
	5 m/s		+22

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

4 September, thu

	761 mmHg		78%
	4.69 m/s		+22

4 September, Thursday. day, 24°; night, 18°; clear

5 September, fri

	762 mmHg		75%
	5.1 m/s		+21

5 September, Friday. day, 23°; night, 18°; clear

6 September, sat

	763 mmHg		78%
	5.2 m/s		+22

6 September, Saturday. day, 23°; night, 17°; clear

7 September, sun

	762 mmHg		79%
	5.2 m/s		+22

7 September, Sunday. day, 24°; night, 17°; clear

8 September, mon

	761 mmHg		80%
	5.1 m/s		+21

8 September, Monday. day, 23°; night, 18°; partly cloudy

9 September, tue

	762 mmHg		79%
	5.1 m/s		+21

9 September, Tuesday. day, 23°; night, 17°; overcast

10 September, wed

	762 mmHg		79%
	4.9 m/s		+21

10 September, Wednesday. day, 22°; night, 17°; rain

11 September, thu

	763 mmHg		76%
	5.3 m/s		+21

11 September, Thursday. day, 22°; night, 16°; partly cloudy

12 September, fri

	763 mmHg		75%
	5.1 m/s		+21

12 September, Friday. day, 22°; night, 16°; clear

13 September, sat

	762 mmHg		79%
	4.6 m/s		+21

13 September, Saturday. day, 23°; night, 17°; clear

14 September, sun

	762 mmHg		79%
	4.8 m/s		+21

14 September, Sunday. day, 23°; night, 17°; clear

15 September, mon

	763 mmHg		77%
	5.1 m/s		+20

15 September, Monday. day, 22°; night, 17°; partly cloudy

16 September, tue

	763 mmHg		77%
	4.8 m/s		+20

16 September, Tuesday. day, 21°; night, 15°; rain

17 September, wed

	763 mmHg		77%
	5.1 m/s		+20

17 September, Wednesday. day, 21°; night, 15°; partly cloudy

18 September, thu

	762 mmHg		79%
	5.6 m/s		+20

18 September, Thursday. day, 21°; night, 15°; overcast

19 September, fri

	763 mmHg		78%
	5.4 m/s		+20

19 September, Friday. day, 20°; night, 15°; clear

20 September, sat

	763 mmHg		78%
	5.3 m/s		+20

20 September, Saturday. day, 21°; night, 15°; clear

21 September, sun

	763 mmHg		76%
	5.1 m/s		+20

21 September, Sunday. day, 21°; night, 15°; clear

22 September, mon

	762 mmHg		79%
	5.6 m/s		+20

22 September, Monday. day, 21°; night, 16°; overcast

23 September, tue

	762 mmHg		76%
	5.9 m/s		+20

23 September, Tuesday. day, 20°; night, 16°; rain

24 September, wed

	763 mmHg		75%
	5.3 m/s		+20

24 September, Wednesday. day, 20°; night, 14°; clear

25 September, thu

	763 mmHg		76%
	5.2 m/s		+19

25 September, Thursday. day, 20°; night, 14°; partly cloudy

26 September, fri

	763 mmHg		80%
	5.2 m/s		+20

26 September, Friday. day, 20°; night, 15°; rain

27 September, sat

	762 mmHg		81%
	5 m/s		+20

27 September, Saturday. day, 20°; night, 15°; rain

28 September, sun

	761 mmHg		81%
	5.2 m/s		+20

28 September, Sunday. day, 20°; night, 16°; rain

29 September, mon

	761 mmHg		80%
	5.9 m/s		+19

29 September, Monday. day, 19°; night, 15°; rain

30 September, tue

	762 mmHg		77%
	5.6 m/s		+18

30 September, Tuesday. day, 18°; night, 13°; rain

1 October, wed

	762 mmHg		79%
	5.3 m/s		+18

1 October, Wednesday. day, 18°; night, 13°; rain

2 October, thu

	762 mmHg		78%
	5.2 m/s		+18

2 October, Thursday. day, 19°; night, 13°; clear

3 October, fri

	763 mmHg		77%
	5.2 m/s		+18

3 October, Friday. day, 18°; night, 13°; clear

4 October, sat

	764 mmHg		80%
	5.4 m/s		+18

4 October, Saturday. day, 18°; night, 13°; overcast

Average data for 10 years

Falmouth September

11

sunny days

9

days with precipitation

8

cloudy days

11 sunny days; 9 days with precipitation; 8 cloudy days;

78

%

air humidity

3.6

m/s

WindS

93

mm of precipitation

(9% of annual average)

+21

°C

Water temperature

air humidity 78%; 93 millimeters of precipitation (9% of annual average); Wind southerly 3.6 Meters per second; Water temperature +21°

Weather graphs for September

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

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S

S

S

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S

S

S

S

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S

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S

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1

Average data for 10 years

2

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10

11

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30

Daytime temperature

Night-time temperature

Cities near you

New York
Boston
Islandia
Colchester
Jamaica
Lake George
Weehawken
Portland
Brookhaven

Cities with similar weather in September

Podgorica
Toronto
Genoa
Seattle
Lima
Albena
San Remo
San Sebastian
Triest

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

In September, the weather in Falmouth is typically warm. Average daily high temperature in September is about 22 degrees above zero. On average, Falmouth has 11 sunny, 9 rainy, 7 partly cloudy, and 3 cloudy days in September. The rains are usually heavy.

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