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September weather forecast in Newcastle

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

	761 mmHg		69%
	4.9 m/s		+19

31 August, Sunday. day, 20°; night, 12°; partly cloudy

1 September, mon

	762 mmHg		72%
	4.5 m/s		+19

1 September, Monday. day, 19°; night, 12°; rain

2 September, tue

	762 mmHg		72%
	5.1 m/s		+18

2 September, Tuesday. day, 19°; night, 12°; rain

3 September, wed

	762 mmHg		69%
	5.4 m/s		+18

3 September, Wednesday. day, 20°; night, 12°; clear

4 September, thu

	762 mmHg		71%
	5.1 m/s		+19

4 September, Thursday. day, 19°; night, 12°; rain

5 September, fri

	762 mmHg		68%
	5.4 m/s		+19

5 September, Friday. day, 19°; night, 11°; clear

6 September, sat

	762 mmHg		69%
	5.2 m/s		+19

6 September, Saturday. day, 20°; night, 11°; clear

7 September, sun

	762 mmHg		68%
	5.2 m/s		+19

7 September, Sunday. day, 19°; night, 12°; clear

8 September, mon

	762 mmHg		67%
	5.3 m/s		+19

8 September, Monday. day, 19°; night, 12°; clear

9 September, tue

	761 mmHg		68%
	4.9 m/s		+19

9 September, Tuesday. day, 19°; night, 12°; rain

10 September, wed

	762 mmHg		70%
	4.9 m/s		+19

10 September, Wednesday. day, 19°; night, 11°; clear

11 September, thu

	762 mmHg		68%
	4.6 m/s		+19

11 September, Thursday. day, 20°; night, 11°; clear

12 September, fri

	762 mmHg		67%
	4.8 m/s		+20

12 September, Friday. day, 20°; night, 11°; clear

13 September, sat

	762 mmHg		68%
	4.69 m/s		+20

13 September, Saturday. day, 20°; night, 11°; clear

14 September, sun

	762 mmHg		68%
	5.2 m/s		+19

14 September, Sunday. day, 21°; night, 12°; clear

15 September, mon

	761 mmHg		65%
	5.3 m/s		+20

15 September, Monday. day, 21°; night, 12°; clear

16 September, tue

	761 mmHg		65%
	5.1 m/s		+19

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

17 September, wed

	762 mmHg		65%
	5.2 m/s		+19

17 September, Wednesday. day, 21°; night, 13°; partly cloudy

18 September, thu

	762 mmHg		69%
	5.2 m/s		+19

18 September, Thursday. day, 21°; night, 13°; clear

19 September, fri

	761 mmHg		66%
	4.6 m/s		+19

19 September, Friday. day, 22°; night, 13°; clear

20 September, sat

	761 mmHg		69%
	5 m/s		+20

20 September, Saturday. day, 21°; night, 13°; clear

21 September, sun

	762 mmHg		73%
	4.4 m/s		+20

21 September, Sunday. day, 21°; night, 13°; clear

22 September, mon

	761 mmHg		67%
	5 m/s		+20

22 September, Monday. day, 22°; night, 14°; clear

23 September, tue

	760 mmHg		65%
	5.1 m/s		+20

23 September, Tuesday. day, 22°; night, 14°; partly cloudy

24 September, wed

	760 mmHg		68%
	5.2 m/s		+20

24 September, Wednesday. day, 22°; night, 13°; rain

25 September, thu

	761 mmHg		69%
	5.4 m/s		+19

25 September, Thursday. day, 21°; night, 13°; rain

26 September, fri

	762 mmHg		71%
	5.2 m/s		+19

26 September, Friday. day, 20°; night, 13°; partly cloudy

27 September, sat

	761 mmHg		69%
	5.2 m/s		+20

27 September, Saturday. day, 21°; night, 13°; partly cloudy

28 September, sun

	760 mmHg		68%
	5.2 m/s		+21

28 September, Sunday. day, 22°; night, 13°; partly cloudy

29 September, mon

	760 mmHg		67%
	5.5 m/s		+20

29 September, Monday. day, 22°; night, 13°; rain

30 September, tue

	761 mmHg		67%
	5.3 m/s		+20

30 September, Tuesday. day, 21°; night, 13°; clear

1 October, wed

	761 mmHg		67%
	5.5 m/s		+20

1 October, Wednesday. day, 23°; night, 13°; clear

2 October, thu

	761 mmHg		69%
	4.8 m/s		+20

2 October, Thursday. day, 22°; night, 14°; clear

3 October, fri

	761 mmHg		66%
	5.2 m/s		+20

3 October, Friday. day, 23°; night, 14°; clear

4 October, sat

	761 mmHg		71%
	4.8 m/s		+22

4 October, Saturday. day, 22°; night, 14°; clear

Average data for 10 years

Newcastle September

17

sunny days

7

days with precipitation

2

cloudy days

17 sunny days; 7 days with precipitation; 2 cloudy days;

68

%

air humidity

3.3

m/s

WindS

46

mm of precipitation

(6% of annual average)

+19

°C

Water temperature

air humidity 68%; 46 millimeters of precipitation (6% of annual average); Wind southerly 3.3 Meters per second; Water temperature +19°

Weather graphs for September

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

S

SW

S

SW

SW

S

S

S

SW

S

SW

SW

S

SW

SW

SW

SW

S

S

S

S

S

SW

S

S

S

S

S

S

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

Sydney
Canberra
Nowra
Yamba
Cessnock
Batemans Bay
Dubbo
Penrith
Armidale

Cities with similar weather in September

San Francisco
Vancouver
Looe
Bruges
Perth
Liverpool
Brighton
Rostock
Lubek

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

In September, the weather in Newcastle is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, Newcastle has 17 sunny, 7 rainy, and 6 partly cloudy days in September. The rains are usually moderate. September as well as August is considered the most comfortable time to visit Newcastle.

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