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September weather forecast in Courtenay

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

	760 mmHg		77%
	3 m/s		+12

31 August, Sunday. day, 19°; night, 14°; rain

1 September, mon

	760 mmHg		77%
	2.8 m/s		+13

1 September, Monday. day, 19°; night, 14°; clear

2 September, tue

	760 mmHg		77%
	2.9 m/s		+12

2 September, Tuesday. day, 20°; night, 13°; clear

3 September, wed

	760 mmHg		77%
	2.9 m/s		+12

3 September, Wednesday. day, 20°; night, 14°; clear

4 September, thu

	761 mmHg		76%
	2.8 m/s		+13

4 September, Thursday. day, 20°; night, 14°; clear

5 September, fri

	761 mmHg		77%
	3 m/s		+13

5 September, Friday. day, 19°; night, 13°; partly cloudy

6 September, sat

	762 mmHg		77%
	3 m/s		+13

6 September, Saturday. day, 19°; night, 13°; partly cloudy

7 September, sun

	762 mmHg		78%
	3.1 m/s		+13

7 September, Sunday. day, 20°; night, 14°; partly cloudy

8 September, mon

	761 mmHg		78%
	3.1 m/s		+13

8 September, Monday. day, 19°; night, 13°; clear

9 September, tue

	760 mmHg		77%
	3.3 m/s		+12

9 September, Tuesday. day, 19°; night, 13°; partly cloudy

10 September, wed

	760 mmHg		78%
	3.2 m/s		+13

10 September, Wednesday. day, 19°; night, 13°; clear

11 September, thu

	761 mmHg		78%
	2.8 m/s		+13

11 September, Thursday. day, 19°; night, 13°; clear

12 September, fri

	761 mmHg		77%
	2.9 m/s		+13

12 September, Friday. day, 19°; night, 13°; clear

13 September, sat

	760 mmHg		78%
	2.8 m/s		+13

13 September, Saturday. day, 19°; night, 13°; clear

14 September, sun

	759 mmHg		79%
	3 m/s		+13

14 September, Sunday. day, 19°; night, 13°; overcast

15 September, mon

	758 mmHg		79%
	2.9 m/s		+12

15 September, Monday. day, 18°; night, 13°; rain

16 September, tue

	759 mmHg		81%
	3 m/s		+13

16 September, Tuesday. day, 17°; night, 12°; rain

17 September, wed

	759 mmHg		82%
	3.3 m/s		+12

17 September, Wednesday. day, 17°; night, 12°; rain

18 September, thu

	759 mmHg		83%
	3.2 m/s		+12

18 September, Thursday. day, 16°; night, 12°; rain

19 September, fri

	760 mmHg		82%
	3 m/s		+12

19 September, Friday. day, 16°; night, 12°; rain

20 September, sat

	762 mmHg		80%
	2.9 m/s		+12

20 September, Saturday. day, 17°; night, 12°; rain

21 September, sun

	762 mmHg		79%
	3.1 m/s		+12

21 September, Sunday. day, 17°; night, 11°; rain

22 September, mon

	760 mmHg		79%
	3.7 m/s		+12

22 September, Monday. day, 17°; night, 11°; partly cloudy

23 September, tue

	761 mmHg		80%
	3.3 m/s		+12

23 September, Tuesday. day, 17°; night, 12°; rain

24 September, wed

	761 mmHg		83%
	3.5 m/s		+12

24 September, Wednesday. day, 16°; night, 11°; rain

25 September, thu

	760 mmHg		83%
	3.8 m/s		+12

25 September, Thursday. day, 17°; night, 12°; rain

26 September, fri

	761 mmHg		82%
	3.8 m/s		+12

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

27 September, sat

	761 mmHg		81%
	3.6 m/s		+12

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

28 September, sun

	761 mmHg		81%
	3.5 m/s		+12

28 September, Sunday. day, 16°; night, 11°; clear

29 September, mon

	759 mmHg		80%
	3.5 m/s		+12

29 September, Monday. day, 16°; night, 11°; rain

30 September, tue

	760 mmHg		79%
	3.4 m/s		+12

30 September, Tuesday. day, 15°; night, 10°; clear

1 October, wed

	761 mmHg		79%
	3.1 m/s		+12

1 October, Wednesday. day, 15°; night, 10°; clear

2 October, thu

	761 mmHg		81%
	3.5 m/s		+12

2 October, Thursday. day, 14°; night, 10°; clear

3 October, fri

	761 mmHg		81%
	3.4 m/s		+12

3 October, Friday. day, 14°; night, 9°; clear

4 October, sat

	761 mmHg		82%
	3.2 m/s		+12

4 October, Saturday. day, 14°; night, 10°; clear

Average data for 10 years

Courtenay September

11

sunny days

13

days with precipitation

7

cloudy days

11 sunny days; 13 days with precipitation; 7 cloudy days;

79

%

air humidity

1.9

m/s

WindS

125

mm of precipitation

(6% of annual average)

+12

°C

Water temperature

air humidity 79%; 125 millimeters of precipitation (6% of annual average); Wind southerly 1.9 Meters per second; Water temperature +12°

Weather graphs for September

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

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S

S

S

S

S

S

S

S

S

S

SW

S

S

S

S

S

S

S

SW

S

S

S

S

S

S

S

S

SW

SW

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

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18

19

20

21

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29

30

Daytime temperature

Night-time temperature

Cities near you

Vancouver
Seattle
Victoria
Tofino
Tacoma
Federal Way
Port Angeles
Surrey
Aberdeen

Cities with similar weather in September

Sydney
Seattle
Balkhash
Montreal
Bruges
Brighton
Rostock
Lubek
Rijeka

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

In September, the weather in Courtenay is typically warm. Average daily high temperature in September is about 18 degrees above zero. On average, Courtenay has 13 rainy, 11 sunny, 5 partly cloudy, and 1 cloudy day in September. The rains are usually heavy.

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