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September weather forecast in Sept-Iles

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

	755 mmHg		78%
	4.6 m/s		+15

31 August, Sunday. day, 18°; night, 10°; rain

1 September, mon

	757 mmHg		74%
	5.1 m/s		+17

1 September, Monday. day, 18°; night, 10°; clear

2 September, tue

	758 mmHg		73%
	4.6 m/s		+16

2 September, Tuesday. day, 19°; night, 10°; clear

3 September, wed

	756 mmHg		73%
	4.8 m/s		+15

3 September, Wednesday. day, 18°; night, 11°; partly cloudy

4 September, thu

	756 mmHg		75%
	5.2 m/s		+15

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

5 September, fri

	757 mmHg		74%
	4.6 m/s		+15

5 September, Friday. day, 17°; night, 9°; clear

6 September, sat

	757 mmHg		75%
	4.69 m/s		+15

6 September, Saturday. day, 17°; night, 9°; partly cloudy

7 September, sun

	756 mmHg		79%
	4.6 m/s		+15

7 September, Sunday. day, 17°; night, 9°; overcast

8 September, mon

	756 mmHg		76%
	5.1 m/s		+14

8 September, Monday. day, 17°; night, 10°; rain

9 September, tue

	758 mmHg		75%
	4.8 m/s		+14

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

10 September, wed

	758 mmHg		77%
	4.4 m/s		+14

10 September, Wednesday. day, 16°; night, 9°; overcast

11 September, thu

	759 mmHg		75%
	4.69 m/s		+14

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

12 September, fri

	757 mmHg		76%
	4.69 m/s		+13

12 September, Friday. day, 17°; night, 8°; clear

13 September, sat

	757 mmHg		78%
	4.69 m/s		+13

13 September, Saturday. day, 16°; night, 9°; overcast

14 September, sun

	758 mmHg		77%
	4.8 m/s		+12

14 September, Sunday. day, 15°; night, 8°; rain

15 September, mon

	757 mmHg		79%
	5 m/s		+12

15 September, Monday. day, 16°; night, 8°; rain

16 September, tue

	757 mmHg		76%
	5.3 m/s		+13

16 September, Tuesday. day, 15°; night, 8°; rain

17 September, wed

	757 mmHg		74%
	5.1 m/s		+12

17 September, Wednesday. day, 15°; night, 8°; clear

18 September, thu

	758 mmHg		74%
	4.69 m/s		+12

18 September, Thursday. day, 14°; night, 7°; clear

19 September, fri

	759 mmHg		78%
	4.6 m/s		+11

19 September, Friday. day, 14°; night, 6°; rain

20 September, sat

	758 mmHg		77%
	4.5 m/s		+12

20 September, Saturday. day, 14°; night, 6°; rain

21 September, sun

	758 mmHg		78%
	4.9 m/s		+12

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

22 September, mon

	757 mmHg		80%
	4.9 m/s		+12

22 September, Monday. day, 14°; night, 7°; rain

23 September, tue

	755 mmHg		76%
	5.6 m/s		+11

23 September, Tuesday. day, 14°; night, 8°; rain

24 September, wed

	758 mmHg		71%
	5.1 m/s		+11

24 September, Wednesday. day, 12°; night, 6°; clear

25 September, thu

	759 mmHg		73%
	4.9 m/s		+12

25 September, Thursday. day, 13°; night, 5°; partly cloudy

26 September, fri

	759 mmHg		79%
	4.3 m/s		+12

26 September, Friday. day, 13°; night, 5°; partly cloudy

27 September, sat

	758 mmHg		78%
	4.69 m/s		+12

27 September, Saturday. day, 13°; night, 6°; rain

28 September, sun

	757 mmHg		81%
	4.9 m/s		+11

28 September, Sunday. day, 14°; night, 7°; rain

29 September, mon

	757 mmHg		78%
	5.3 m/s		+11

29 September, Monday. day, 13°; night, 7°; partly cloudy

30 September, tue

	757 mmHg		78%
	5.2 m/s		+11

30 September, Tuesday. day, 13°; night, 6°; rain

1 October, wed

	758 mmHg		78%
	4.9 m/s		+10

1 October, Wednesday. day, 12°; night, 6°; partly cloudy

2 October, thu

	758 mmHg		79%
	5 m/s		+11

2 October, Thursday. day, 12°; night, 5°; partly cloudy

3 October, fri

	758 mmHg		74%
	5.1 m/s		+10

3 October, Friday. day, 11°; night, 5°; clear

4 October, sat

	760 mmHg		74%
	4.9 m/s		+10

4 October, Saturday. day, 11°; night, 4°; clear

Average data for 10 years

Sept-Iles September

9

sunny days

13

days with precipitation

8

cloudy days

9 sunny days; 13 days with precipitation; 8 cloudy days;

76

%

air humidity

3.3

m/s

WindSW

106

mm of precipitation

(10% of annual average)

+13

°C

Water temperature

air humidity 76%; 106 millimeters of precipitation (10% of annual average); Wind south-westerly 3.3 Meters per second; Water temperature +13°

Weather graphs for September

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

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SW

SW

S

SW

SW

S

SW

S

SW

S

SW

SW

S

SW

SW

SW

SW

S

S

SW

S

SW

SW

S

S

S

S

SW

SW

1

Average data for 10 years

2

3

4

5

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7

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9

10

11

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13

14

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21

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30

Daytime temperature

Night-time temperature

Cities near you

Quebec
Saint John
Saguenay
Bangor
New Glasgow
Baie-Comeau
Wabush
Bonaventure
Churchill Falls

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 Sept-Iles is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Sept-Iles has 13 rainy, 9 sunny, 5 partly cloudy, and 3 cloudy 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 Sept-Iles.

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