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December weather forecast in Sydney

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

30 November, sun

	758 mmHg		76%
	8.1 m/s		+7

30 November, Sunday. day, 4°; night, 1°; partly cloudy

1 December, mon

	757 mmHg		81%
	8.8 m/s		+7

1 December, Monday. day, 5°; night, 1°; rain

2 December, tue

	755 mmHg		81%
	8.1 m/s		+7

2 December, Tuesday. day, 5°; night, 2°; partly cloudy

3 December, wed

	755 mmHg		82%
	8 m/s		+6

3 December, Wednesday. day, 4°; night, 1°; rain

4 December, thu

	754 mmHg		82%
	8.3 m/s		+6

4 December, Thursday. day, 3°; night, 1°; rain

5 December, fri

	757 mmHg		78%
	7.8 m/s		+6

5 December, Friday. day, 2°; night, 0°; clear

6 December, sat

	757 mmHg		79%
	8.3 m/s		+6

6 December, Saturday. day, 3°; night, 0°; rain

7 December, sun

	755 mmHg		78%
	8.2 m/s		+6

7 December, Sunday. day, 3°; night, 1°; clear

8 December, mon

	755 mmHg		78%
	8.6 m/s		+5

8 December, Monday. day, 2°; night, 0°; partly cloudy

9 December, tue

	758 mmHg		76%
	8.8 m/s		+5

9 December, Tuesday. day, 1°; night, 0°; rain

10 December, wed

	759 mmHg		79%
	8.8 m/s		+5

10 December, Wednesday. day, 2°; night, -1°; partly cloudy

11 December, thu

	758 mmHg		80%
	8.3 m/s		+5

11 December, Thursday. day, 2°; night, 0°; partly cloudy

12 December, fri

	757 mmHg		80%
	8.6 m/s		+5

12 December, Friday. day, 3°; night, 0°; rain

13 December, sat

	758 mmHg		79%
	8 m/s		+5

13 December, Saturday. day, 2°; night, 0°; partly cloudy

14 December, sun

	758 mmHg		79%
	7.8 m/s		+5

14 December, Sunday. day, 1°; night, -1°; rain

15 December, mon

	756 mmHg		80%
	9.5 m/s		+5

15 December, Monday. day, 2°; night, 0°; rain

16 December, tue

	756 mmHg		78%
	9 m/s		+5

16 December, Tuesday. day, 1°; night, 0°; partly cloudy

17 December, wed

	757 mmHg		79%
	8.6 m/s		+4

17 December, Wednesday. day, 1°; night, -2°; overcast

18 December, thu

	753 mmHg		80%
	9.2 m/s		+4

18 December, Thursday. day, 2°; night, 0°; rain

19 December, fri

	753 mmHg		77%
	8.89 m/s		+4

19 December, Friday. day, 1°; night, 0°; rain

20 December, sat

	755 mmHg		78%
	8.39 m/s		+4

20 December, Saturday. day, 1°; night, -1°; rain

21 December, sun

	756 mmHg		79%
	8.6 m/s		+4

21 December, Sunday. day, 1°; night, -1°; overcast

22 December, mon

	755 mmHg		79%
	8.7 m/s		+4

22 December, Monday. day, 1°; night, -1°; rain

23 December, tue

	757 mmHg		79%
	7.7 m/s		+4

23 December, Tuesday. day, 1°; night, -1°; overcast

24 December, wed

	758 mmHg		80%
	8.2 m/s		+4

24 December, Wednesday. day, 1°; night, -1°; rain

25 December, thu

	756 mmHg		78%
	8.6 m/s		+4

25 December, Thursday. day, 2°; night, 0°; overcast

26 December, fri

	757 mmHg		76%
	8.3 m/s		+4

26 December, Friday. day, 0°; night, -1°; clear

27 December, sat

	754 mmHg		80%
	8.5 m/s		+4

27 December, Saturday. day, 1°; night, -1°; snow

28 December, sun

	753 mmHg		80%
	8.39 m/s		+4

28 December, Sunday. day, 0°; night, -2°; partly cloudy

29 December, mon

	754 mmHg		81%
	7.5 m/s		+3

29 December, Monday. day, 1°; night, -2°; snow

30 December, tue

	753 mmHg		80%
	8.6 m/s		+3

30 December, Tuesday. day, 0°; night, -2°; snow

31 December, wed

	754 mmHg		79%
	8.39 m/s		+3

31 December, Wednesday. day, 0°; night, -3°; overcast

1 January, thu

	753 mmHg		78%
	8.5 m/s		+3

1 January, Thursday. day, 0°; night, -4°; overcast

2 January, fri

	753 mmHg		79%
	8.8 m/s		+3

2 January, Friday. day, -1°; night, -4°; rain

3 January, sat

	755 mmHg		78%
	8.3 m/s		+3

3 January, Saturday. day, -1°; night, -4°; overcast

Average data for 10 years

Sydney December

3

sunny days

16

days with precipitation

18

cloudy days

3 sunny days; 16 days with precipitation; 18 cloudy days;

79

%

air humidity

6.1

m/s

WindSW

150

mm of precipitation

(11% of annual average)

+5

°C

Water temperature

air humidity 79%; 150 millimeters of precipitation (11% of annual average); Wind south-westerly 6.1 Meters per second; Water temperature +5°

Weather graphs for December

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

W

SW

SW

W

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

31

Daytime temperature

Night-time temperature

Cities near you

Saint John
Halifax
Liverpool
New Glasgow
Deer Lake
Bridgewater
Bonaventure
Iles de la Madeleine
Charlottetown

Cities with similar weather in December

Helsinki
Riga
Tallinn
Stockholm
Reykyavik
Oslo
Yurmala
Toronto
Palanga

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

December in Sydney is the windiest month of the year. In December, the weather in Sydney is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Sydney has 11 cloudy, 7 rainy, 7 partly cloudy, 3 snowy, and 3 sunny days in December. The rains are usually heavy. December as well as April, May, October, and November is considered the most uncomfortable time to visit Sydney.

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