December marks the start of Australian summer. The weather in Sydney is spectacular with blue skies and mild temperatures. This is also a busy time of the year with lots of events and activities on offer. Here is what you need to know if you’re planning to travel to Sydney in December.
December is the first month of the summer season in Sydney, which lasts until February. Bright blue skies, a gentle breeze, and little chance of rain make this the perfect time for a holiday in Australia.
If you’re visiting Sydney in December, you can expect mild temperatures with daytime highs of around 25 °C (77 °F) and average night lows of 18°C (64.4 °F).
The sea around Sydney is pleasant at this time of the year, with a maximum temperature of 25 °C (77 °F). December is an ideal month for swimming and water sport activities, including kayaking, jet boating, and snorkelling.
The average December day in Sydney has 14.3 hours of daylight. The sun rises between 5:37 am and 5:46 am and sets between 7:50 pm and 8:09 pm by the last day of the month.
December is also the sunniest month of the year, with 9 hours of sunshine per day and 257 hours per month.
Australia experiences some of the highest levels of UV radiation in the world due to the Earth’s closer proximity to the sun during summer in the southern hemisphere and clear weather conditions. The average daily maximum UV index in December is 12, indicating a very high health risk from unsafe exposure to the sun's ultraviolet rays. Sun protection is essential if you’re spending any time outdoors.
There are on average 6 rainy days in Sydney in December and a 23% chance of rain. If you’re visiting Australia in the summer, you should also be prepared for some thunderstorms.
December is one of the most popular times of year for a Sydney vacation. Plenty of events and activities are taking place throughout the month, in particular between Christmas and New Year. The weather is also comfortably warm for visiting outdoor attractions and national parks.
Whether you prefer large busy markets or more intimate ones, Sydney has something for everyone. From Christmas night markets to relaxed artisan markets, you’re guaranteed to find something to fit your taste.
The Rolex Sydney to Hobart Yacht Race is considered the most difficult ocean race in the world. Watch some of the world's greatest yachts as they depart from Sydney on Boxing day on their way to the Tasmanian capital of Hobart.
Eating seafood, especially fresh prawns and oysters, is among the favourite Aussie Christmas traditions. Do like locals and get your Christmas essentials at the Sydney Fish Market’s 36-Hour Christmas Seafood Marathon. Here you’ll find all the premium local seafood and fresh produce you need for a festive meal.
Be one of the first in the world to ring in the new year with the fireworks lighting up the Harbour Bridge. The best vantage points include Observatory Hill, Mrs Macquaries Point at the Botanic Garden, Giba Park, Pirrama Park, Embarkation Point, and Blues Point Reserve. Note that most of these spots are ticketed.
For more inspiration on things to see and do in Sydney in December, browse our Australia Vacation Packages, which are fully customisable to your needs and preferences.
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