Sydney Weather in December
Australia · early winter in Northern Hemisphere / early summer in Southern Hemisphere
Sydney enjoys a temperate oceanic climate with warm summers, mild winters, and rainfall throughout the year. Sydney Harbour and the Pacific Ocean create significant coastal influence — sea breezes (locally called the 'Southerly Buster') arrive in summer afternoons and dramatically cool the city within minutes. Western suburbs are 5–10°C hotter in summer than coastal areas, and extreme fire weather during inland heat waves creates dangerous conditions.
Holiday season. Many cities decorate beautifully. Book ahead for December travel.
Current Weather in Sydney Right Now
70°F
Broken Clouds
Feels like 71°F · H 71°F / L 69°F
Is December a Good Time to Visit Sydney?
Sydney enjoys one of the world's best climates. Summers are warm with beach weather; winters are mild enough for outdoor activities. The city is split between coastal suburbs (cooled by sea breezes) and inland western suburbs (dramatically hotter in summer).
What to Pack for Sydney in December
- ✓Sunscreen SPF 50+ year-round (UV is extreme)
- ✓Swimwear for beaches and harbor pools
- ✓Light layers for evenings
- ✓Good walking shoes for coastal paths