Sydney Weather in December

December in Sydney sees daytime temperatures around 24°C (75°F) and lows of 18°C (64°F) at night. With around 63 mm (2.5 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Sydney in December

Past climate data indicates that roughly 10 days will see rain, totalling around 63 mm (2.5 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Sydney in December

Weather in Sydney is at its excellent in December. Highs reach 24°C (75°F), while nights settle around 18°C (64°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Sydney in December

The days are predominantly sunny, with an estimated total of around 257 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in Sydney in December

Wind speeds average 4 m/s (8 knots) during December. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in December

With water at 20°C (68°F), conditions are good for swimming and other water activities. You won't need a wetsuit and most people find it very comfortable.

If your ideal day consists of dry skies and pleasant temperatures, January, March, April, May, September, October, November and December typically offer the best circumstances for Sydney.