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Australia weather

Weather in New South Wales for December 2025

Your guide to New South Wales weather in December - trends and predictions

    Temperatures

  • Until now, December 2025 in New South Wales has been nearly identical to the historical average, with a temperature of 24 °C (showing only a slight deviation of 0.2 °C).

  • The forecast for the upcoming days in New South Wales predicts a temperature of 24.8 °C, which is slightly above the historical average.

  • In general, the average temperature in New South Wales at the beginning of December is 24 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21.9 °C by the end of December.

    • Rain 🌧️

  • New South Wales experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 68 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
7
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/18°
Temperatures
Average wind speed
24 km/h
Avg max wind
Average humidity
73 %
Avg humidity

New South Wales Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
23°
2
Sunny
23°
3
Patchy rain possible
24°
4
Patchy rain possible
22°
5
Partly cloudy
25°
6
Patchy rain possible
25°
7
Patchy rain possible
26°
8
Patchy rain possible
23°
9
Patchy rain possible
24°
10
Patchy rain possible
23°
11
Patchy rain possible
22°
12
Patchy rain possible
23°
13
Patchy rain possible
25°
14
Sunny
26°
15
Patchy rain possible
23°
16
Patchy rain possible
23°
17
Patchy rain possible
24°
18
Sunny
28°
19
Patchy rain possible
30°
20
Patchy rain possible
31°
21
Moderate rain
31°
22
Partly cloudy
25°
23
Patchy rain possible
24°
24
Patchy rain possible
24°
25
Patchy rain possible
20°
26
Patchy rain possible
19°
27
Cloudy
21°
28
Patchy rain possible
22°
29
Patchy rain possible
24°
30
Patchy rain possible
24°
31
Patchy rain possible
23°

What’s the Weather Like in New South Wales This December?

Discover the average temperatures and weather trends across New South Wales’s cities this December.
Patchy rain possibleSydney23 °C / 18 °CPatchy rain possibleNewcastle25 °C / 18 °CPatchy rain possibleWollongong25 °C / 17 °CPatchy rain possibleParramatta29 °C / 18 °CPatchy rain possibleCoffs Harbour26 °C / 19 °CPatchy rain possibleGrafton32 °C / 18 °CPatchy rain possibleLiverpool30 °C / 17 °CPatchy rain possiblePort Macquarie26 °C / 19 °CPatchy rain possibleBathurst27 °C / 13 °CSunnyArmidale29 °C / 13 °CPatchy rain possibleHornsby27 °C / 18 °CPatchy rain possibleForster30 °C / 17 °CMore Locations

Temperatures trend during December in New South Wales

See the weather trend as well as the moving average line

December weather in New South Wales day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Patchy rain possible
Patchy rain possible
 23° /17° 3 mm 8
2 Dec. Sunny
Sunny
 23° /16° 2.2 mm 8
3 Dec. Patchy rain possible
Patchy rain possible
 24° /16° 1.3 mm 8
4 Dec. Patchy rain possible
Patchy rain possible
 22° /17° 0.4 mm 8
5 Dec. Partly cloudy
Partly cloudy
 25° /17° 0.1 mm 9
6 Dec. Patchy rain possible
Patchy rain possible
 25° /19° 0.7 mm 8
7 Dec. Patchy rain possible
Patchy rain possible
 26° /17° 1.6 mm 8
8 Dec. Patchy rain possible
Patchy rain possible
 23° /17° 0.2 mm 8
9 Dec. Patchy rain possible
Patchy rain possible
 24° /17° 1.9 mm 8
10 Dec. Patchy rain possible
Patchy rain possible
 23° /17° 3.5 mm 8
11 Dec. Patchy rain possible
Patchy rain possible
 22° /17° 3.5 mm 8
12 Dec. Patchy rain possible
Patchy rain possible
 23° /17° 2.8 mm 8
13 Dec. Patchy rain possible
Patchy rain possible
 25° /16° 0.4 mm 9
14 Dec. Sunny
Sunny
 26° /18° 1.2 mm 9
15 Dec. Patchy rain possible
Patchy rain possible
 23° /17° 1.9 mm 8
16 Dec. Patchy rain possible
Patchy rain possible
 23° /18° 3.8 mm 8
17 Dec. Patchy rain possible
Patchy rain possible
 24° /19° 0.6 mm 3.4
18 Dec. Sunny
Sunny
 28° /19° 0 mm 3.6
19 Dec. Patchy rain possible
Patchy rain possible
 30° /22° 0.3 mm 2.9
20 Dec. Patchy rain possible
Patchy rain possible
 31° /21° 0.3 mm 3.1
21 Dec. Moderate rain
Moderate rain
 31° /22° 14.9 mm 2.5
22 Dec. Partly cloudy
Partly cloudy
 25° /20° 0 mm 9
23 Dec. Patchy rain possible
Patchy rain possible
 24° /20° 0.3 mm 8
24 Dec. Patchy rain possible
Patchy rain possible
 24° /20° 0.4 mm 8
25 Dec. Patchy rain possible
Patchy rain possible
 20° /18° 0.4 mm 7
26 Dec. Patchy rain possible
Patchy rain possible
 19° /17° 0.3 mm 7
27 Dec. Cloudy
Cloudy
 21° /18° 0.1 mm 7
28 Dec. Patchy rain possible
Patchy rain possible
 22° /18° 0.4 mm 7
29 Dec. Patchy rain possible
Patchy rain possible
 24° /19° 0.9 mm 8
30 Dec. Patchy rain possible
Patchy rain possible
 24° /19° 0.2 mm 8
31 Dec. Patchy rain possible
Patchy rain possible
 23° /18° 1 mm 7
Next
Important Notice
Our weather forecast for New South Wales in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the New South Wales forecast closer to your planned date for the most up-to-date weather information.
Change Month
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New South Wales in December - FAQ

What are the expected maximum and minimum temperatures in New South Wales during December?
During December, expect a variety of temperatures with highs around 23° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in New South Wales during December?
Moderate rainfall is anticipated in New South Wales during December, with a total of 68 mm spread over approximately 24 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in New South Wales during December?
The average wind speed in New South Wales during December is 24 km/h, suggesting breezy to windy conditions, depending on your activities.

New South Wales water temperatures in December

The average water temperature of the Pacific Ocean near New South Wales in December is 20 °C. At the beginning of December temperatures are around 20 °C; by the end of the month they stay fairly steady and reach 19.8 °C.

What is the water temperature in New South Wales in December?
The average water temperature in New South Wales in December is 20 °C.
Can you swim in New South Wales in December?
Refreshing and invigorating. Expect to feel chilled after 10–20 minutes; a shorty wetsuit extends water time, especially at dawn.

December rainfall patterns in New South Wales

Explore the daily rainfall trends and prepare for New South Waless December weather 💧
Typically, New South Wales has 24 rainy days in December with a total of 68 mm of rainfall.

UV exposure in New South Wales during December

Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
Counties in New South Wales
Select a county for an accurate weather forecast
Armidale RegionalBathurst RegionalBlue Mountains MunicipalityBourkeBroken Hill MunicipalityByron ShireCampbelltown MunicipalityCentral CoastCessnockCity of SydneyClarence ValleyCoffs HarbourEurobodallaFairfieldGoulburn MulwareeGriffithHilltopsHornsby ShireInverellKiamaKu-ring-gaiLismore MunicipalityMaitland MunicipalityMid-CoastMid-Western RegionalMurray RiverMuswellbrookNewcastleNorthern BeachesOrange MunicipalityParkesParramattaPort Macquarie-HastingsRichmond ValleySnowy Monaro RegionalTamworth MunicipalityWestern Plains RegionalWingecarribeeWollongong
Top locations in New South Wales
Select a location for an accurate weather forecast
ArmidaleBathurstCoffs HarbourGraftonLiverpoolNewcastleParramattaPort MacquarieSydneyWollongong
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Location coordinates Where is New South Wales?

Get accurate weather forecasts for New South Wales, located at latitude -33.868 and longitude 151.207. Stay updated with localized weather information tailored for New South Wales.

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