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September weather forecast in Dutch Harbor

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

	730 mmHg		91%
	7.1 m/s		+12

31 August, Sunday. day, 10°; night, 8°; rain

1 September, mon

	731 mmHg		91%
	6.8 m/s		+12

1 September, Monday. day, 10°; night, 8°; overcast

2 September, tue

	731 mmHg		91%
	7 m/s		+11

2 September, Tuesday. day, 10°; night, 8°; rain

3 September, wed

	730 mmHg		90%
	7.1 m/s		+11

3 September, Wednesday. day, 10°; night, 8°; rain

4 September, thu

	729 mmHg		90%
	6.8 m/s		+12

4 September, Thursday. day, 10°; night, 8°; overcast

5 September, fri

	730 mmHg		90%
	6.8 m/s		+10

5 September, Friday. day, 10°; night, 8°; overcast

6 September, sat

	730 mmHg		90%
	7.1 m/s		+11

6 September, Saturday. day, 10°; night, 8°; overcast

7 September, sun

	729 mmHg		90%
	7.2 m/s		+10

7 September, Sunday. day, 10°; night, 8°; rain

8 September, mon

	729 mmHg		89%
	6.9 m/s		+11

8 September, Monday. day, 9°; night, 7°; rain

9 September, tue

	729 mmHg		90%
	7 m/s		+10

9 September, Tuesday. day, 9°; night, 7°; rain

10 September, wed

	730 mmHg		89%
	7.2 m/s		+10

10 September, Wednesday. day, 9°; night, 7°; rain

11 September, thu

	728 mmHg		89%
	7.1 m/s		+11

11 September, Thursday. day, 10°; night, 7°; rain

12 September, fri

	728 mmHg		88%
	7.6 m/s		+11

12 September, Friday. day, 9°; night, 7°; overcast

13 September, sat

	730 mmHg		88%
	7.5 m/s		+10

13 September, Saturday. day, 9°; night, 7°; rain

14 September, sun

	729 mmHg		89%
	7.5 m/s		+11

14 September, Sunday. day, 9°; night, 8°; overcast

15 September, mon

	728 mmHg		89%
	7.5 m/s		+10

15 September, Monday. day, 9°; night, 7°; partly cloudy

16 September, tue

	727 mmHg		88%
	8.5 m/s		+9

16 September, Tuesday. day, 9°; night, 7°; overcast

17 September, wed

	727 mmHg		87%
	8.5 m/s		+9

17 September, Wednesday. day, 9°; night, 7°; rain

18 September, thu

	727 mmHg		88%
	8.1 m/s		+9

18 September, Thursday. day, 9°; night, 7°; rain

19 September, fri

	728 mmHg		86%
	7.6 m/s		+10

19 September, Friday. day, 8°; night, 6°; rain

20 September, sat

	729 mmHg		86%
	7.6 m/s		+9

20 September, Saturday. day, 9°; night, 6°; partly cloudy

21 September, sun

	727 mmHg		87%
	8.1 m/s		+8

21 September, Sunday. day, 8°; night, 6°; rain

22 September, mon

	726 mmHg		87%
	8.1 m/s		+9

22 September, Monday. day, 8°; night, 6°; rain

23 September, tue

	727 mmHg		84%
	8 m/s		+9

23 September, Tuesday. day, 8°; night, 6°; rain

24 September, wed

	727 mmHg		84%
	7.8 m/s		+8

24 September, Wednesday. day, 8°; night, 6°; rain

25 September, thu

	728 mmHg		84%
	7.9 m/s		+8

25 September, Thursday. day, 8°; night, 5°; rain

26 September, fri

	729 mmHg		84%
	8.3 m/s		+8

26 September, Friday. day, 8°; night, 6°; partly cloudy

27 September, sat

	729 mmHg		85%
	8.1 m/s		+8

27 September, Saturday. day, 8°; night, 6°; rain

28 September, sun

	729 mmHg		85%
	7.7 m/s		+8

28 September, Sunday. day, 8°; night, 6°; rain

29 September, mon

	731 mmHg		85%
	8.6 m/s		+9

29 September, Monday. day, 8°; night, 6°; rain

30 September, tue

	730 mmHg		84%
	9.1 m/s		+8

30 September, Tuesday. day, 8°; night, 6°; rain

1 October, wed

	729 mmHg		84%
	9.2 m/s		+9

1 October, Wednesday. day, 8°; night, 6°; partly cloudy

2 October, thu

	729 mmHg		85%
	8.3 m/s		+8

2 October, Thursday. day, 7°; night, 5°; overcast

3 October, fri

	727 mmHg		85%
	7.7 m/s		+8

3 October, Friday. day, 7°; night, 5°; overcast

4 October, sat

	726 mmHg		85%
	8.7 m/s		+8

4 October, Saturday. day, 8°; night, 5°; rain

Average data for 10 years

Dutch Harbor September

0

sunny days

20

days with precipitation

18

cloudy days

0 sunny days; 20 days with precipitation; 18 cloudy days;

88

%

air humidity

5.6

m/s

WindSW

122

mm of precipitation

(10% of annual average)

+10

°C

Water temperature

air humidity 88%; 122 millimeters of precipitation (10% of annual average); Wind south-westerly 5.6 Meters per second; Water temperature +10°

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

SW

SW

SW

SW

SW

SW

SW

SW

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

Adak Island
Akutan
Cold Bay
Alakanuk
Kotlik
Aniak
Sand Point
Mekoryuk
Kipnuk

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Cholpon-Ata
Reykyavik
Oslo
Yurmala
Palanga

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

In September, the weather in Dutch Harbor is typically cold. Average daily high temperature in September is about 9 degrees above zero. On average, Dutch Harbor has 20 rainy, 7 cloudy, and 3 partly cloudy days in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Dutch Harbor.

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