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September weather forecast in Plymouth

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

	756 mmHg		83%
	5.3 m/s		+17

31 August, Sunday. day, 18°; night, 11°; partly cloudy

1 September, mon

	757 mmHg		83%
	4.8 m/s		+16

1 September, Monday. day, 18°; night, 11°; partly cloudy

2 September, tue

	756 mmHg		86%
	5 m/s		+16

2 September, Tuesday. day, 18°; night, 11°; partly cloudy

3 September, wed

	755 mmHg		86%
	5.7 m/s		+16

3 September, Wednesday. day, 18°; night, 12°; overcast

4 September, thu

	755 mmHg		85%
	5.5 m/s		+16

4 September, Thursday. day, 18°; night, 12°; partly cloudy

5 September, fri

	755 mmHg		86%
	5.6 m/s		+16

5 September, Friday. day, 18°; night, 12°; rain

6 September, sat

	754 mmHg		86%
	5.7 m/s		+16

6 September, Saturday. day, 18°; night, 12°; rain

7 September, sun

	754 mmHg		86%
	5.6 m/s		+16

7 September, Sunday. day, 18°; night, 11°; overcast

8 September, mon

	754 mmHg		87%
	5.6 m/s		+16

8 September, Monday. day, 18°; night, 12°; rain

9 September, tue

	754 mmHg		86%
	5.7 m/s		+16

9 September, Tuesday. day, 18°; night, 12°; partly cloudy

10 September, wed

	754 mmHg		86%
	6.1 m/s		+16

10 September, Wednesday. day, 18°; night, 12°; partly cloudy

11 September, thu

	754 mmHg		86%
	5.9 m/s		+16

11 September, Thursday. day, 17°; night, 11°; rain

12 September, fri

	755 mmHg		85%
	5.9 m/s		+16

12 September, Friday. day, 17°; night, 11°; rain

13 September, sat

	755 mmHg		84%
	5.5 m/s		+16

13 September, Saturday. day, 17°; night, 10°; clear

14 September, sun

	755 mmHg		84%
	5.4 m/s		+16

14 September, Sunday. day, 17°; night, 10°; clear

15 September, mon

	755 mmHg		85%
	5.5 m/s		+16

15 September, Monday. day, 17°; night, 10°; partly cloudy

16 September, tue

	754 mmHg		83%
	5.7 m/s		+16

16 September, Tuesday. day, 17°; night, 10°; clear

17 September, wed

	754 mmHg		84%
	5.8 m/s		+16

17 September, Wednesday. day, 17°; night, 10°; clear

18 September, thu

	754 mmHg		84%
	6.2 m/s		+16

18 September, Thursday. day, 16°; night, 10°; clear

19 September, fri

	755 mmHg		85%
	5.7 m/s		+16

19 September, Friday. day, 17°; night, 11°; overcast

20 September, sat

	755 mmHg		86%
	5.7 m/s		+16

20 September, Saturday. day, 17°; night, 11°; partly cloudy

21 September, sun

	755 mmHg		85%
	5.5 m/s		+16

21 September, Sunday. day, 17°; night, 11°; partly cloudy

22 September, mon

	754 mmHg		87%
	5.5 m/s		+16

22 September, Monday. day, 16°; night, 10°; rain

23 September, tue

	754 mmHg		87%
	6.2 m/s		+16

23 September, Tuesday. day, 16°; night, 10°; partly cloudy

24 September, wed

	753 mmHg		86%
	6.2 m/s		+16

24 September, Wednesday. day, 16°; night, 10°; rain

25 September, thu

	754 mmHg		87%
	5.5 m/s		+15

25 September, Thursday. day, 16°; night, 9°; rain

26 September, fri

	754 mmHg		88%
	6.1 m/s		+16

26 September, Friday. day, 16°; night, 10°; rain

27 September, sat

	754 mmHg		87%
	6.5 m/s		+16

27 September, Saturday. day, 16°; night, 10°; rain

28 September, sun

	754 mmHg		88%
	6 m/s		+16

28 September, Sunday. day, 16°; night, 10°; rain

29 September, mon

	753 mmHg		86%
	5.9 m/s		+16

29 September, Monday. day, 16°; night, 10°; overcast

30 September, tue

	751 mmHg		90%
	6.7 m/s		+16

30 September, Tuesday. day, 16°; night, 10°; rain

1 October, wed

	751 mmHg		87%
	6.7 m/s		+15

1 October, Wednesday. day, 15°; night, 11°; rain

2 October, thu

	752 mmHg		87%
	6 m/s		+15

2 October, Thursday. day, 15°; night, 10°; rain

3 October, fri

	753 mmHg		87%
	6.4 m/s		+15

3 October, Friday. day, 15°; night, 9°; partly cloudy

4 October, sat

	753 mmHg		86%
	7 m/s		+15

4 October, Saturday. day, 14°; night, 9°; overcast

Average data for 10 years

Plymouth September

5

sunny days

12

days with precipitation

10

cloudy days

5 sunny days; 12 days with precipitation; 10 cloudy days;

86

%

air humidity

4.1

m/s

WindS

67

mm of precipitation

(7% of annual average)

+16

°C

Water temperature

air humidity 86%; 67 millimeters of precipitation (7% of annual average); Wind southerly 4.1 Meters per second; Water temperature +16°

Weather graphs for September

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

SW

S

SW

SW

S

SW

S

S

S

SW

SW

SW

S

SW

SW

S

S

SW

S

S

S

S

S

S

SW

SW

SW

SW

SW

SW

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

Dublin
Manchester
Brest
Liverpool
Trowbridge
Oxford
Bournemouth
Wicklow
Carnac

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Yurmala
Palanga
Dublin
Buenos Aires
Copenhagen

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

In September, the weather in Plymouth is typically warm. Average daily high temperature in September is about 17 degrees above zero. On average, Plymouth has 12 rainy, 9 partly cloudy, 5 sunny, and 4 cloudy days in September. The rains are usually moderate.

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