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September weather forecast in Mount Gambier

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

	758 mmHg		77%
	6.4 m/s		+14

31 August, Sunday. day, 14°; night, 8°; rain

1 September, mon

	758 mmHg		78%
	5.8 m/s		+14

1 September, Monday. day, 15°; night, 8°; partly cloudy

2 September, tue

	758 mmHg		78%
	6.4 m/s		+14

2 September, Tuesday. day, 15°; night, 8°; partly cloudy

3 September, wed

	758 mmHg		78%
	6.5 m/s		+14

3 September, Wednesday. day, 15°; night, 7°; rain

4 September, thu

	758 mmHg		76%
	6.2 m/s		+14

4 September, Thursday. day, 14°; night, 7°; rain

5 September, fri

	759 mmHg		78%
	6.2 m/s		+14

5 September, Friday. day, 14°; night, 7°; rain

6 September, sat

	758 mmHg		76%
	6.6 m/s		+14

6 September, Saturday. day, 14°; night, 8°; rain

7 September, sun

	758 mmHg		76%
	6.7 m/s		+14

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

8 September, mon

	758 mmHg		77%
	7.1 m/s		+14

8 September, Monday. day, 15°; night, 9°; rain

9 September, tue

	760 mmHg		81%
	6.1 m/s		+14

9 September, Tuesday. day, 14°; night, 7°; partly cloudy

10 September, wed

	759 mmHg		78%
	6.4 m/s		+14

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

11 September, thu

	759 mmHg		76%
	6.5 m/s		+15

11 September, Thursday. day, 15°; night, 8°; rain

12 September, fri

	759 mmHg		76%
	6 m/s		+14

12 September, Friday. day, 15°; night, 8°; partly cloudy

13 September, sat

	758 mmHg		76%
	6.5 m/s		+14

13 September, Saturday. day, 16°; night, 8°; partly cloudy

14 September, sun

	758 mmHg		77%
	6.6 m/s		+14

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

15 September, mon

	757 mmHg		77%
	6.5 m/s		+14

15 September, Monday. day, 15°; night, 8°; partly cloudy

16 September, tue

	758 mmHg		78%
	6.7 m/s		+14

16 September, Tuesday. day, 14°; night, 8°; clear

17 September, wed

	758 mmHg		75%
	6.7 m/s		+14

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

18 September, thu

	757 mmHg		76%
	7.1 m/s		+14

18 September, Thursday. day, 16°; night, 9°; rain

19 September, fri

	757 mmHg		77%
	6.6 m/s		+14

19 September, Friday. day, 16°; night, 7°; rain

20 September, sat

	758 mmHg		77%
	6.4 m/s		+14

20 September, Saturday. day, 15°; night, 8°; partly cloudy

21 September, sun

	758 mmHg		77%
	6.1 m/s		+14

21 September, Sunday. day, 16°; night, 8°; partly cloudy

22 September, mon

	757 mmHg		78%
	6.3 m/s		+14

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

23 September, tue

	758 mmHg		78%
	6.4 m/s		+14

23 September, Tuesday. day, 16°; night, 8°; partly cloudy

24 September, wed

	758 mmHg		79%
	6.3 m/s		+14

24 September, Wednesday. day, 14°; night, 7°; rain

25 September, thu

	759 mmHg		76%
	6.1 m/s		+14

25 September, Thursday. day, 15°; night, 7°; rain

26 September, fri

	758 mmHg		75%
	5.7 m/s		+14

26 September, Friday. day, 16°; night, 7°; clear

27 September, sat

	757 mmHg		75%
	6.6 m/s		+14

27 September, Saturday. day, 17°; night, 8°; clear

28 September, sun

	756 mmHg		75%
	6.9 m/s		+14

28 September, Sunday. day, 16°; night, 8°; rain

29 September, mon

	757 mmHg		76%
	6.5 m/s		+14

29 September, Monday. day, 15°; night, 8°; overcast

30 September, tue

	757 mmHg		76%
	6.4 m/s		+14

30 September, Tuesday. day, 16°; night, 8°; overcast

1 October, wed

	758 mmHg		75%
	6.2 m/s		+14

1 October, Wednesday. day, 17°; night, 8°; partly cloudy

2 October, thu

	758 mmHg		75%
	6 m/s		+15

2 October, Thursday. day, 18°; night, 8°; clear

3 October, fri

	758 mmHg		75%
	6.4 m/s		+14

3 October, Friday. day, 17°; night, 8°; partly cloudy

4 October, sat

	758 mmHg		74%
	6.4 m/s		+14

4 October, Saturday. day, 17°; night, 9°; rain

Average data for 10 years

Mount Gambier September

4

sunny days

14

days with precipitation

6

cloudy days

4 sunny days; 14 days with precipitation; 6 cloudy days;

77

%

air humidity

4.4

m/s

WindSW

77

mm of precipitation

(12% of annual average)

+14

°C

Water temperature

air humidity 77%; 77 millimeters of precipitation (12% of annual average); Wind south-westerly 4.4 Meters per second; Water temperature +14°

Weather graphs for September

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

S

S

S

SW

SW

S

S

SW

SW

S

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

S

S

SW

SW

S

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

Melbourne
Adelaide
Apollo Bay
Gawler
Port Lincoln
Port Pirie
Colac
Broken Hill
Cowes

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.

September in Mount Gambier is the windiest month of the year. In September, the weather in Mount Gambier is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Mount Gambier has 14 rainy, 9 partly cloudy, 4 sunny, and 3 cloudy days in September. The rains are usually moderate. September as well as June, July, and August is considered the most uncomfortable time to visit Mount Gambier.

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