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September weather forecast in Southport

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

	759 mmHg		77%
	4.5 m/s		+18

31 August, Sunday. day, 23°; night, 16°; clear

1 September, mon

	760 mmHg		76%
	4.1 m/s		+18

1 September, Monday. day, 23°; night, 16°; clear

2 September, tue

	760 mmHg		78%
	4.1 m/s		+18

2 September, Tuesday. day, 22°; night, 15°; partly cloudy

3 September, wed

	759 mmHg		80%
	4.4 m/s		+18

3 September, Wednesday. day, 23°; night, 15°; partly cloudy

4 September, thu

	758 mmHg		79%
	4 m/s		+18

4 September, Thursday. day, 23°; night, 15°; clear

5 September, fri

	760 mmHg		77%
	4.3 m/s		+17

5 September, Friday. day, 22°; night, 15°; clear

6 September, sat

	761 mmHg		78%
	3.9 m/s		+17

6 September, Saturday. day, 22°; night, 15°; clear

7 September, sun

	759 mmHg		81%
	4.1 m/s		+17

7 September, Sunday. day, 23°; night, 15°; clear

8 September, mon

	758 mmHg		81%
	4.3 m/s		+17

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

9 September, tue

	759 mmHg		80%
	4.3 m/s		+17

9 September, Tuesday. day, 22°; night, 15°; rain

10 September, wed

	760 mmHg		80%
	4.4 m/s		+17

10 September, Wednesday. day, 21°; night, 14°; clear

11 September, thu

	761 mmHg		79%
	4.5 m/s		+16

11 September, Thursday. day, 21°; night, 14°; rain

12 September, fri

	760 mmHg		79%
	4.4 m/s		+17

12 September, Friday. day, 21°; night, 14°; clear

13 September, sat

	760 mmHg		82%
	4.1 m/s		+17

13 September, Saturday. day, 21°; night, 14°; partly cloudy

14 September, sun

	759 mmHg		82%
	4.3 m/s		+17

14 September, Sunday. day, 21°; night, 14°; rain

15 September, mon

	760 mmHg		82%
	4.4 m/s		+16

15 September, Monday. day, 20°; night, 14°; rain

16 September, tue

	761 mmHg		81%
	4.5 m/s		+16

16 September, Tuesday. day, 19°; night, 13°; partly cloudy

17 September, wed

	761 mmHg		80%
	4.19 m/s		+16

17 September, Wednesday. day, 20°; night, 12°; clear

18 September, thu

	760 mmHg		81%
	4.3 m/s		+16

18 September, Thursday. day, 20°; night, 13°; rain

19 September, fri

	761 mmHg		80%
	4.5 m/s		+16

19 September, Friday. day, 19°; night, 12°; clear

20 September, sat

	761 mmHg		82%
	4.5 m/s		+16

20 September, Saturday. day, 19°; night, 12°; partly cloudy

21 September, sun

	761 mmHg		79%
	4.4 m/s		+16

21 September, Sunday. day, 20°; night, 12°; clear

22 September, mon

	760 mmHg		81%
	4.6 m/s		+16

22 September, Monday. day, 20°; night, 13°; overcast

23 September, tue

	759 mmHg		78%
	4.69 m/s		+16

23 September, Tuesday. day, 19°; night, 13°; rain

24 September, wed

	760 mmHg		77%
	4.5 m/s		+16

24 September, Wednesday. day, 19°; night, 11°; clear

25 September, thu

	761 mmHg		81%
	4.5 m/s		+16

25 September, Thursday. day, 18°; night, 11°; partly cloudy

26 September, fri

	760 mmHg		83%
	4.19 m/s		+16

26 September, Friday. day, 19°; night, 12°; rain

27 September, sat

	760 mmHg		84%
	4.3 m/s		+16

27 September, Saturday. day, 19°; night, 12°; clear

28 September, sun

	759 mmHg		85%
	4.4 m/s		+16

28 September, Sunday. day, 18°; night, 13°; rain

29 September, mon

	759 mmHg		81%
	5 m/s		+16

29 September, Monday. day, 17°; night, 12°; overcast

30 September, tue

	760 mmHg		81%
	4.6 m/s		+15

30 September, Tuesday. day, 17°; night, 10°; partly cloudy

1 October, wed

	760 mmHg		83%
	4.4 m/s		+15

1 October, Wednesday. day, 17°; night, 10°; partly cloudy

2 October, thu

	760 mmHg		82%
	4.3 m/s		+15

2 October, Thursday. day, 16°; night, 10°; overcast

3 October, fri

	761 mmHg		81%
	4.1 m/s		+14

3 October, Friday. day, 16°; night, 10°; clear

4 October, sat

	762 mmHg		82%
	4.19 m/s		+15

4 October, Saturday. day, 16°; night, 10°; overcast

Average data for 10 years

Southport September

12

sunny days

8

days with precipitation

8

cloudy days

12 sunny days; 8 days with precipitation; 8 cloudy days;

80

%

air humidity

3

m/s

WindSW

89

mm of precipitation

(9% of annual average)

+17

°C

Water temperature

air humidity 80%; 89 millimeters of precipitation (9% of annual average); Wind south-westerly 3 Meters per second; Water temperature +17°

Weather graphs for September

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

SW

S

SW

SW

SW

SW

S

S

S

SW

SW

SW

S

SW

SW

SW

SW

S

S

S

SW

S

SW

SW

S

S

S

S

SW

S

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

Boston
Colchester
Quebec
Saint John
Berlin
Portland
Amherst
New Bedford
Saint Johnsbury

Cities with similar weather in September

Vancouver
Balkhash
Montreal
Bruges
San Sebastian
Brighton
Rijeka
Bournemouth
Le Havre

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

In September, the weather in Southport is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, Southport has 12 sunny, 8 rainy, 7 partly cloudy, and 3 cloudy days in September. The rains are usually heavy. September as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Southport.

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