Sydney Weather in December — What to Expect

Overview

Sydney, Australia — December is early summer, beach season begins, and Sydney builds toward its spectacular New Year's Eve harbour fireworks. Whether you are planning a holiday or a business trip, understanding the weather helps you pack right and make the most of your time.

Temperature

Daytime highs reach 26°C (79°F) while nights cool to 18°C (64°F). Expect around 8 hours of sunshine per day.

Rainfall

Sydney sees about 80mm of rainfall across 10 days during this period. Rainfall is moderate. The odd shower is possible but unlikely to ruin your plans.

Humidity and Comfort

Average humidity sits at 65%. Most visitors find this comfortable, though midday can feel slightly muggy.

What to Pack

• Light layers — t-shirts plus a jacket for cooler evenings
• Sunscreen and sunglasses
• Compact umbrella or light rain jacket
• Comfortable walking shoes suited to the terrain

Best Things to Do

• Walk from Bondi to Coogee along the stunning coastal path
• See the Sydney Opera House and harbour on a ferry ride
• Take a day trip to the Blue Mountains for bush walks and lookouts
• Celebrate New Year's Eve with fireworks over the Harbour Bridge

Travel Tips

• Apply sunscreen frequently — the UV index in Australia is extreme
• The Opal card works on all public transport including ferries
• NYE viewing spots fill up very early; arrive by midday for a good harbour position

Quick Summary

---

Plan your trip with the live Sydney forecast on Weather Tomorrow.