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September weather forecast in Nanaimo

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

	751 mmHg		78%
	4 m/s		+12

31 August, Sunday. day, 18°; night, 14°; rain

1 September, mon

	751 mmHg		77%
	3.9 m/s		+12

1 September, Monday. day, 18°; night, 14°; clear

2 September, tue

	751 mmHg		77%
	3.8 m/s		+12

2 September, Tuesday. day, 18°; night, 14°; clear

3 September, wed

	751 mmHg		76%
	3.6 m/s		+12

3 September, Wednesday. day, 18°; night, 14°; clear

4 September, thu

	752 mmHg		76%
	3.7 m/s		+12

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

5 September, fri

	752 mmHg		76%
	4 m/s		+12

5 September, Friday. day, 18°; night, 14°; partly cloudy

6 September, sat

	753 mmHg		77%
	3.9 m/s		+12

6 September, Saturday. day, 18°; night, 14°; partly cloudy

7 September, sun

	752 mmHg		78%
	4.19 m/s		+13

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

8 September, mon

	751 mmHg		78%
	4.3 m/s		+12

8 September, Monday. day, 18°; night, 14°; clear

9 September, tue

	751 mmHg		79%
	4.4 m/s		+12

9 September, Tuesday. day, 18°; night, 14°; partly cloudy

10 September, wed

	751 mmHg		78%
	4 m/s		+13

10 September, Wednesday. day, 18°; night, 14°; clear

11 September, thu

	752 mmHg		78%
	3.9 m/s		+13

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

12 September, fri

	752 mmHg		78%
	4 m/s		+13

12 September, Friday. day, 18°; night, 14°; clear

13 September, sat

	751 mmHg		78%
	3.7 m/s		+12

13 September, Saturday. day, 18°; night, 14°; clear

14 September, sun

	750 mmHg		79%
	4 m/s		+12

14 September, Sunday. day, 17°; night, 13°; partly cloudy

15 September, mon

	749 mmHg		80%
	4 m/s		+12

15 September, Monday. day, 17°; night, 13°; rain

16 September, tue

	750 mmHg		80%
	4 m/s		+12

16 September, Tuesday. day, 16°; night, 13°; rain

17 September, wed

	750 mmHg		81%
	4.8 m/s		+12

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

18 September, thu

	750 mmHg		82%
	4.6 m/s		+12

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

19 September, fri

	751 mmHg		81%
	4.1 m/s		+12

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

20 September, sat

	752 mmHg		81%
	4 m/s		+12

20 September, Saturday. day, 16°; night, 12°; partly cloudy

21 September, sun

	753 mmHg		78%
	4 m/s		+12

21 September, Sunday. day, 16°; night, 12°; partly cloudy

22 September, mon

	751 mmHg		77%
	4.5 m/s		+12

22 September, Monday. day, 16°; night, 12°; clear

23 September, tue

	752 mmHg		79%
	4.3 m/s		+12

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

24 September, wed

	752 mmHg		81%
	4.5 m/s		+12

24 September, Wednesday. day, 16°; night, 12°; overcast

25 September, thu

	751 mmHg		82%
	4.8 m/s		+12

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

26 September, fri

	752 mmHg		82%
	4.8 m/s		+12

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

27 September, sat

	752 mmHg		80%
	4.6 m/s		+12

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

28 September, sun

	752 mmHg		80%
	4.69 m/s		+12

28 September, Sunday. day, 15°; night, 11°; partly cloudy

29 September, mon

	750 mmHg		80%
	4.8 m/s		+12

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

30 September, tue

	751 mmHg		80%
	5 m/s		+12

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

1 October, wed

	752 mmHg		79%
	4.4 m/s		+12

1 October, Wednesday. day, 14°; night, 11°; clear

2 October, thu

	752 mmHg		80%
	4.8 m/s		+11

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

3 October, fri

	752 mmHg		80%
	4.69 m/s		+12

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

4 October, sat

	751 mmHg		81%
	4.5 m/s		+12

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

Average data for 10 years

Nanaimo September

12

sunny days

10

days with precipitation

5

cloudy days

12 sunny days; 10 days with precipitation; 5 cloudy days;

79

%

air humidity

2.7

m/s

WindSW

100

mm of precipitation

(6% of annual average)

+12

°C

Water temperature

air humidity 79%; 100 millimeters of precipitation (6% of annual average); Wind south-westerly 2.7 Meters per second; Water temperature +12°

Weather graphs for September

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

S

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

S

S

S

S

SW

SW

SW

S

S

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

Vancouver
Seattle
Portland
Victoria
Vancouver
Mount Ranier National Park
Courtenay
Tofino
Tacoma

Cities with similar weather in September

Sydney
Copenhagen
Gdansk
Looe
Montreal
Bruges
Perth
Liverpool
Brighton

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

In September, the weather in Nanaimo is typically warm. Average daily high temperature in September is about 17 degrees above zero. On average, Nanaimo has 12 sunny, 10 rainy, 7 partly cloudy, and 1 cloudy day in September. The rains are usually heavy.

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