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September weather forecast in Bangor

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%
	6.4 m/s		+14

31 August, Sunday. day, 15°; night, 12°; partly cloudy

1 September, mon

	756 mmHg		85%
	6.5 m/s		+15

1 September, Monday. day, 15°; night, 12°; overcast

2 September, tue

	755 mmHg		86%
	6.5 m/s		+15

2 September, Tuesday. day, 15°; night, 13°; rain

3 September, wed

	754 mmHg		85%
	6.7 m/s		+14

3 September, Wednesday. day, 15°; night, 12°; partly cloudy

4 September, thu

	755 mmHg		84%
	6.7 m/s		+14

4 September, Thursday. day, 15°; night, 12°; clear

5 September, fri

	755 mmHg		84%
	7.2 m/s		+14

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

6 September, sat

	754 mmHg		84%
	7.3 m/s		+14

6 September, Saturday. day, 15°; night, 12°; rain

7 September, sun

	753 mmHg		85%
	7.2 m/s		+15

7 September, Sunday. day, 15°; night, 12°; rain

8 September, mon

	753 mmHg		84%
	7 m/s		+15

8 September, Monday. day, 15°; night, 12°; overcast

9 September, tue

	754 mmHg		84%
	7.4 m/s		+15

9 September, Tuesday. day, 15°; night, 12°; rain

10 September, wed

	753 mmHg		85%
	7.1 m/s		+14

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

11 September, thu

	752 mmHg		85%
	7.5 m/s		+14

11 September, Thursday. day, 15°; night, 12°; rain

12 September, fri

	753 mmHg		83%
	7.8 m/s		+14

12 September, Friday. day, 14°; night, 11°; rain

13 September, sat

	754 mmHg		81%
	7.9 m/s		+14

13 September, Saturday. day, 15°; night, 11°; partly cloudy

14 September, sun

	755 mmHg		83%
	7.2 m/s		+14

14 September, Sunday. day, 14°; night, 12°; partly cloudy

15 September, mon

	755 mmHg		83%
	7.2 m/s		+14

15 September, Monday. day, 14°; night, 11°; rain

16 September, tue

	754 mmHg		82%
	7.6 m/s		+14

16 September, Tuesday. day, 14°; night, 11°; partly cloudy

17 September, wed

	754 mmHg		82%
	6.7 m/s		+14

17 September, Wednesday. day, 14°; night, 11°; partly cloudy

18 September, thu

	754 mmHg		83%
	6.9 m/s		+14

18 September, Thursday. day, 14°; night, 11°; clear

19 September, fri

	754 mmHg		84%
	6.9 m/s		+14

19 September, Friday. day, 14°; night, 11°; partly cloudy

20 September, sat

	754 mmHg		83%
	7 m/s		+14

20 September, Saturday. day, 14°; night, 11°; partly cloudy

21 September, sun

	754 mmHg		84%
	7.5 m/s		+14

21 September, Sunday. day, 15°; night, 12°; partly cloudy

22 September, mon

	754 mmHg		82%
	7.5 m/s		+14

22 September, Monday. day, 14°; night, 11°; rain

23 September, tue

	754 mmHg		81%
	8.1 m/s		+14

23 September, Tuesday. day, 14°; night, 11°; rain

24 September, wed

	753 mmHg		83%
	8 m/s		+14

24 September, Wednesday. day, 13°; night, 11°; partly cloudy

25 September, thu

	753 mmHg		83%
	7.7 m/s		+14

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

26 September, fri

	753 mmHg		82%
	7.8 m/s		+14

26 September, Friday. day, 14°; night, 11°; overcast

27 September, sat

	753 mmHg		82%
	7.5 m/s		+14

27 September, Saturday. day, 14°; night, 11°; rain

28 September, sun

	753 mmHg		82%
	7.8 m/s		+14

28 September, Sunday. day, 14°; night, 11°; rain

29 September, mon

	752 mmHg		83%
	7.6 m/s		+14

29 September, Monday. day, 14°; night, 11°; rain

30 September, tue

	750 mmHg		86%
	8.3 m/s		+13

30 September, Tuesday. day, 14°; night, 11°; rain

1 October, wed

	749 mmHg		82%
	8.39 m/s		+13

1 October, Wednesday. day, 13°; night, 11°; rain

2 October, thu

	751 mmHg		80%
	8 m/s		+13

2 October, Thursday. day, 13°; night, 10°; partly cloudy

3 October, fri

	750 mmHg		81%
	8.8 m/s		+13

3 October, Friday. day, 13°; night, 10°; rain

4 October, sat

	750 mmHg		81%
	8.89 m/s		+13

4 October, Saturday. day, 13°; night, 10°; rain

Average data for 10 years

Bangor September

2

sunny days

16

days with precipitation

12

cloudy days

2 sunny days; 16 days with precipitation; 12 cloudy days;

83

%

air humidity

5.4

m/s

WindSW

96

mm of precipitation

(9% of annual average)

+14

°C

Water temperature

air humidity 83%; 96 millimeters of precipitation (9% of annual average); Wind south-westerly 5.4 Meters per second; Water temperature +14°

Weather graphs for September

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

S

S

S

S

SW

S

S

SW

S

SW

SW

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

19

20

21

22

23

24

25

26

27

28

29

30

Daytime temperature

Night-time temperature

Cities near you

Dublin
Edinburgh
Manchester
Liverpool
Carrickfinn
Glasgow
Cork
Galway
Wicklow

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Oslo
Yurmala
Palanga
Buenos Aires
Copenhagen

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

In September, the weather in Bangor is typically warm. Average daily high temperature in September is about 14 degrees above zero. On average, Bangor has 16 rainy, 9 partly cloudy, 3 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 Bangor.

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