New South Wales (Sydney)
December
Weather in New South Wales for December 2026
Your guide to New South Wales weather in December - trends and predictions
In general, the average temperature in New South Wales at the beginning of December is 23.5 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 23.1 °C by the end of December.
New South Wales experiences moderate rainfall in December, with an average of 10 rainy days and a total precipitation of 64.6 mm.
Is December a good time to visit New South Wales? check out the best time to travel to New South Wales page.
✨ Is December a good time to visit New South Wales? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
21
Dry days
10
Rainy days
0
Snow days
23°/18°
Temperatures
25 km/h
Avg max wind
72 %
Avg humidity
New South Wales Weather December
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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.
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
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain | 22° /17° | 3 mm | 8 | |
| 2 Dec. |  Patchy rain possible | 23° /16° | 2.2 mm | 8 | |
| 3 Dec. | Patchy rain possible | 23° /17° | 1.3 mm | 8 | |
| 4 Dec. | Patchy rain possible | 22° /17° | 0.4 mm | 8 | |
| 5 Dec. |  Partly cloudy | 24° /17° | 0.1 mm | 9 | |
| 6 Dec. | Patchy rain possible | 24° /19° | 0.7 mm | 8 | |
| 7 Dec. | Patchy rain possible | 26° /18° | 1.6 mm | 8 | |
| 8 Dec. | Patchy rain possible | 23° /17° | 0.2 mm | 8 | |
| 9 Dec. | Patchy rain possible | 24° /18° | 1.9 mm | 8 | |
| 10 Dec. | Light rain | 22° /17° | 3.5 mm | 8 | |
| 11 Dec. | Light rain | 21° /17° | 3.5 mm | 8 | |
| 12 Dec. | Light rain | 23° /17° | 2.8 mm | 8 | |
| 13 Dec. | Patchy rain possible | 24° /17° | 0.4 mm | 9 | |
| 14 Dec. | Patchy rain possible | 25° /18° | 1.2 mm | 9 | |
| 15 Dec. | Patchy rain possible | 23° /17° | 1.9 mm | 8 | |
| 16 Dec. | Light rain | 23° /18° | 3.8 mm | 8 | |
| 17 Dec. | Light rain | 24° /19° | 3.2 mm | 8 | |
| 18 Dec. | Patchy rain possible | 25° /19° | 2.4 mm | 9 | |
| 19 Dec. | Partly cloudy | 25° /19° | 0.9 mm | 9 | |
| 20 Dec. | Light rain | 23° /18° | 4.3 mm | 8 | |
| 21 Dec. | Light rain | 25° /18° | 4.8 mm | 9 | |
| 22 Dec. | Patchy rain possible | 24° /18° | 2.3 mm | 8 | |
| 23 Dec. | Patchy rain possible | 24° /18° | 1.2 mm | 8 | |
| 24 Dec. | Patchy rain possible | 23° /18° | 1.9 mm | 8 | |
| 25 Dec. | Light rain | 23° /18° | 2.7 mm | 7 | |
| 26 Dec. | Light rain | 23° /18° | 3.8 mm | 7 | |
| 27 Dec. | Light rain | 25° /18° | 2.5 mm | 9 | |
| 28 Dec. | Patchy rain possible | 24° /17° | 1.4 mm | 8 | |
| 29 Dec. | Patchy rain possible | 22° /18° | 1.2 mm | 8 | |
| 30 Dec. | Light rain | 23° /17° | 2.8 mm | 8 | |
| 31 Dec. | Patchy rain possible | 23° /18° | 0.8 mm | 8 | |
| 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
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 64.6 mm spread over approximately 10 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 25 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 20.2 °C. At the beginning of December temperatures are around 20 °C; by the end of the month they stay fairly steady and reach 20.4 °C.
- What is the water temperature in New South Wales in December?
- The average water temperature in New South Wales in December is 20.2 °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 10 rainy days in December with a total of 64.6 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
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