Weather in Sydney in December
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for December in Sydney.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youSydney in December is warm — daytime temperatures average 24.5°C, dropping to 16.7°C at night. The month is fairly wet (12 rainy days on average), with roughly 10.9 hours of sunshine a day. It is one of the best months of the year to visit. For the complete picture, see the best time to visit Sydney — every month compared. Once you know when to go, find your Sydney packing list at 247PackingList.
Get ready for Sydney in December
Search flights to Sydney
Compare 100+ airlines for December — one search, best price.
Search Flights →Travel clothing layers
Pack layers — temperatures can vary significantly between day and night.
Check Price →What to pack for Sydney in December
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- Light waterproof layer
Compare all months in Sydney
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 26.0°C | 114.1mm | 9/10 |
| February | 25.4°C | 167.6mm | 9/10 |
| March | 24.3°C | 217.3mm | 8/10 |
| April | 22.3°C | 89.6mm | 10/10 |
| May | 19.0°C | 83.9mm | 10/10 |
| June | 17.0°C | 39.5mm | 10/10 |
| July | 16.9°C | 118.6mm | 9/10 |
| August | 18.5°C | 63.3mm | 10/10 |
| September | 20.9°C | 48.6mm | 10/10 |
| October | 22.5°C | 107.6mm | 9/10 |
| November | 22.8°C | 95.7mm | 10/10 |
| December | 24.5°C | 90.5mm | 10/10 |
Full month-by-month guide: best time to visit Sydney →
For facts about Australia — currency, language and dialling code — see our Australia country guide at 247CountryInfo. Travellers also find it useful to keep a Sydney travel guide to hand. Check clothing sizes in Australia before you shop.
Frequently Asked Questions
Is December a good time to visit Sydney?
December rates 10/10 for visiting Sydney — excellent time to visit. Expect average highs of 24.5°C, 90.5mm of rain across the month and about 10.9 hours of daily sunshine.
What is the temperature in Sydney in December?
In December, Sydney has average highs of 24.5°C (76.1°F) and average lows of 16.7°C (62.1°F).
Does it rain in Sydney in December?
Some rain is likely. Sydney averages 90.5mm across about 12 rainy days in December, so a light waterproof layer is worth packing.
What should I wear in Sydney in December?
For Sydney in December (24.5°C highs / 16.7°C lows), pack light layers plus sunscreen, t-shirts and light trousers or shorts, light waterproof layer.
More essentials for Sydney in December
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.