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September weather forecast in Isafjordur

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

	746 mmHg		86%
	7.8 m/s		+8

31 August, Sunday. day, 9°; night, 7°; rain

1 September, mon

	744 mmHg		87%
	8.3 m/s		+8

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

2 September, tue

	746 mmHg		85%
	8.3 m/s		+8

2 September, Tuesday. day, 8°; night, 6°; partly cloudy

3 September, wed

	746 mmHg		84%
	8.1 m/s		+8

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

4 September, thu

	746 mmHg		84%
	8.2 m/s		+8

4 September, Thursday. day, 8°; night, 6°; rain

5 September, fri

	746 mmHg		85%
	8.3 m/s		+8

5 September, Friday. day, 8°; night, 7°; overcast

6 September, sat

	747 mmHg		85%
	7.9 m/s		+8

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

7 September, sun

	746 mmHg		85%
	8.6 m/s		+8

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

8 September, mon

	746 mmHg		83%
	9.8 m/s		+8

8 September, Monday. day, 8°; night, 6°; overcast

9 September, tue

	747 mmHg		83%
	8.5 m/s		+8

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

10 September, wed

	746 mmHg		84%
	9.8 m/s		+8

10 September, Wednesday. day, 7°; night, 5°; rain

11 September, thu

	746 mmHg		84%
	9.5 m/s		+8

11 September, Thursday. day, 7°; night, 5°; partly cloudy

12 September, fri

	746 mmHg		83%
	9.89 m/s		+8

12 September, Friday. day, 7°; night, 5°; rain

13 September, sat

	746 mmHg		81%
	9.39 m/s		+8

13 September, Saturday. day, 7°; night, 5°; rain

14 September, sun

	748 mmHg		81%
	8.3 m/s		+8

14 September, Sunday. day, 7°; night, 5°; clear

15 September, mon

	748 mmHg		82%
	9.3 m/s		+8

15 September, Monday. day, 7°; night, 5°; partly cloudy

16 September, tue

	747 mmHg		82%
	9.89 m/s		+8

16 September, Tuesday. day, 7°; night, 5°; rain

17 September, wed

	746 mmHg		82%
	10.4 m/s		+8

17 September, Wednesday. day, 7°; night, 5°; overcast

18 September, thu

	747 mmHg		81%
	10.2 m/s		+7

18 September, Thursday. day, 6°; night, 5°; rain

19 September, fri

	746 mmHg		85%
	9.7 m/s		+7

19 September, Friday. day, 7°; night, 5°; rain

20 September, sat

	744 mmHg		86%
	9.89 m/s		+7

20 September, Saturday. day, 7°; night, 5°; rain

21 September, sun

	745 mmHg		86%
	9.6 m/s		+7

21 September, Sunday. day, 6°; night, 4°; rain

22 September, mon

	747 mmHg		82%
	9.39 m/s		+8

22 September, Monday. day, 6°; night, 4°; rain

23 September, tue

	748 mmHg		82%
	8.7 m/s		+8

23 September, Tuesday. day, 6°; night, 4°; clear

24 September, wed

	747 mmHg		84%
	10.4 m/s		+8

24 September, Wednesday. day, 6°; night, 4°; rain

25 September, thu

	745 mmHg		83%
	9.7 m/s		+7

25 September, Thursday. day, 6°; night, 4°; rain

26 September, fri

	745 mmHg		82%
	10.5 m/s		+7

26 September, Friday. day, 6°; night, 4°; rain

27 September, sat

	745 mmHg		80%
	9.8 m/s		+7

27 September, Saturday. day, 5°; night, 4°; partly cloudy

28 September, sun

	745 mmHg		81%
	9.89 m/s		+7

28 September, Sunday. day, 5°; night, 4°; rain

29 September, mon

	744 mmHg		82%
	10.8 m/s		+7

29 September, Monday. day, 5°; night, 3°; rain

30 September, tue

	743 mmHg		81%
	10.4 m/s		+7

30 September, Tuesday. day, 5°; night, 4°; overcast

1 October, wed

	743 mmHg		83%
	10.1 m/s		+7

1 October, Wednesday. day, 6°; night, 4°; rain

2 October, thu

	742 mmHg		84%
	10.6 m/s		+7

2 October, Thursday. day, 5°; night, 3°; rain

3 October, fri

	743 mmHg		82%
	11 m/s		+7

3 October, Friday. day, 5°; night, 3°; rain

4 October, sat

	745 mmHg		82%
	11.1 m/s		+7

4 October, Saturday. day, 5°; night, 3°; rain

Average data for 10 years

Isafjordur September

2

sunny days

19

days with precipitation

18

cloudy days

2 sunny days; 19 days with precipitation; 18 cloudy days;

83

%

air humidity

7

m/s

WindSE

135

mm of precipitation

(10% of annual average)

+8

°C

Water temperature

air humidity 83%; 135 millimeters of precipitation (10% of annual average); Wind south-easterly 7 Meters per second; Water temperature +8°

Weather graphs for September

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

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Average data for 10 years

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Daytime temperature

Night-time temperature

Cities near you

Reykyavik
Torshavn
Akureyri
Jan Mayen
Selfoss
Vestmannaeyjar
Borgarnes
Akranes
Sejdisfjordur

Cities with similar weather in September

Cholpon-Ata
Wellington
Nuuk
Ushuaia
Christchurch
Hobart
Punta-Arenas
San-Carlos-de-Bariloche
Puerto Mont

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

September in Isafjordur is the rainiest month of the year. In September, the weather in Isafjordur is typically cold. Average daily high temperature in September is about 7 degrees above zero. On average, Isafjordur has 18 rainy, 6 cloudy, 4 partly cloudy, and 2 sunny days in September. The rains are usually heavy. September as well as January, February, April, and May is considered the most uncomfortable time to visit Isafjordur.

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