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September weather forecast in Stornoway

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

	757 mmHg		81%
	6.3 m/s		+14

31 August, Sunday. day, 16°; night, 10°; partly cloudy

1 September, mon

	756 mmHg		84%
	6.8 m/s		+14

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

2 September, tue

	755 mmHg		83%
	7.2 m/s		+14

2 September, Tuesday. day, 16°; night, 11°; rain

3 September, wed

	755 mmHg		82%
	6.9 m/s		+14

3 September, Wednesday. day, 16°; night, 11°; overcast

4 September, thu

	755 mmHg		83%
	7.1 m/s		+14

4 September, Thursday. day, 16°; night, 11°; overcast

5 September, fri

	755 mmHg		83%
	6.6 m/s		+14

5 September, Friday. day, 16°; night, 11°; rain

6 September, sat

	754 mmHg		83%
	6.7 m/s		+14

6 September, Saturday. day, 16°; night, 11°; rain

7 September, sun

	754 mmHg		83%
	6.7 m/s		+14

7 September, Sunday. day, 16°; night, 11°; overcast

8 September, mon

	753 mmHg		82%
	6.9 m/s		+14

8 September, Monday. day, 16°; night, 11°; clear

9 September, tue

	754 mmHg		81%
	7.1 m/s		+14

9 September, Tuesday. day, 15°; night, 11°; partly cloudy

10 September, wed

	753 mmHg		82%
	6.9 m/s		+14

10 September, Wednesday. day, 15°; night, 10°; overcast

11 September, thu

	751 mmHg		83%
	8 m/s		+13

11 September, Thursday. day, 15°; night, 10°; rain

12 September, fri

	753 mmHg		80%
	7.3 m/s		+14

12 September, Friday. day, 15°; night, 10°; rain

13 September, sat

	753 mmHg		83%
	7 m/s		+13

13 September, Saturday. day, 15°; night, 10°; rain

14 September, sun

	754 mmHg		83%
	7.5 m/s		+13

14 September, Sunday. day, 15°; night, 10°; rain

15 September, mon

	755 mmHg		81%
	7.1 m/s		+13

15 September, Monday. day, 14°; night, 10°; rain

16 September, tue

	755 mmHg		80%
	7.2 m/s		+13

16 September, Tuesday. day, 14°; night, 9°; partly cloudy

17 September, wed

	755 mmHg		82%
	6.6 m/s		+13

17 September, Wednesday. day, 14°; night, 9°; partly cloudy

18 September, thu

	754 mmHg		83%
	6.2 m/s		+13

18 September, Thursday. day, 14°; night, 9°; partly cloudy

19 September, fri

	755 mmHg		82%
	6.4 m/s		+13

19 September, Friday. day, 14°; night, 9°; partly cloudy

20 September, sat

	754 mmHg		82%
	7.6 m/s		+13

20 September, Saturday. day, 15°; night, 10°; rain

21 September, sun

	753 mmHg		82%
	7.5 m/s		+13

21 September, Sunday. day, 15°; night, 10°; rain

22 September, mon

	754 mmHg		82%
	7.2 m/s		+13

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

23 September, tue

	754 mmHg		80%
	7.1 m/s		+13

23 September, Tuesday. day, 14°; night, 9°; rain

24 September, wed

	753 mmHg		82%
	7.1 m/s		+13

24 September, Wednesday. day, 14°; night, 9°; overcast

25 September, thu

	753 mmHg		83%
	8.1 m/s		+13

25 September, Thursday. day, 14°; night, 10°; rain

26 September, fri

	754 mmHg		79%
	7.9 m/s		+13

26 September, Friday. day, 14°; night, 9°; partly cloudy

27 September, sat

	752 mmHg		82%
	7.4 m/s		+13

27 September, Saturday. day, 13°; night, 9°; rain

28 September, sun

	752 mmHg		82%
	7.6 m/s		+13

28 September, Sunday. day, 14°; night, 9°; rain

29 September, mon

	752 mmHg		81%
	6.8 m/s		+13

29 September, Monday. day, 14°; night, 9°; rain

30 September, tue

	750 mmHg		82%
	7 m/s		+13

30 September, Tuesday. day, 14°; night, 8°; clear

1 October, wed

	749 mmHg		81%
	7.4 m/s		+13

1 October, Wednesday. day, 13°; night, 8°; partly cloudy

2 October, thu

	750 mmHg		81%
	8.6 m/s		+13

2 October, Thursday. day, 13°; night, 8°; rain

3 October, fri

	749 mmHg		81%
	8.5 m/s		+13

3 October, Friday. day, 13°; night, 9°; rain

4 October, sat

	749 mmHg		79%
	8.2 m/s		+12

4 October, Saturday. day, 13°; night, 9°; partly cloudy

Average data for 10 years

Stornoway September

2

sunny days

17

days with precipitation

14

cloudy days

2 sunny days; 17 days with precipitation; 14 cloudy days;

82

%

air humidity

5.2

m/s

WindS

98

mm of precipitation

(9% of annual average)

+13

°C

Water temperature

air humidity 82%; 98 millimeters of precipitation (9% of annual average); Wind southerly 5.2 Meters per second; Water temperature +13°

Weather graphs for September

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

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S

S

S

SW

S

S

S

SW

S

SW

SW

SW

SW

SW

SW

S

S

S

S

SW

S

S

S

S

S

S

S

S

S

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

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20

21

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29

30

Daytime temperature

Night-time temperature

Cities near you

Edinburgh
Glasgow
Torshavn
Fort William
Kirkwall
Carrickfinn
Belfast
Largs
Letterkenny

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Cholpon-Ata
Oslo
Yurmala
Palanga
Dublin

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

In September, the weather in Stornoway is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Stornoway has 17 rainy, 6 partly cloudy, 5 cloudy, and 2 sunny days in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Stornoway.

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