December · Australia
Best time to visit Sydney Opera House in December Weather, crowds & prices
Weather in Sydney Opera House in December
Average temperature 21°C, 72 mm of rain, about 29 days with 6+ hours of sunshine and 73% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
8.7/10
Ranked #3 of 12 months
- Avg temp
- 21°C
- Rainfall
- 72 mm
- Humidity
- 73%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
December in Sydney Opera House scores 8.7/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 21°C, 72 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Harbor sails and forecourt light shine across November through March warmth.
December ranks 3rd of 12 for Sydney Opera House — one of the best windows
At 21°C (70°F) this is comfortable city weather in December, with sightseeing easiest before lunch and after the afternoon peak.
Budget for roughly 72 mm of rain this month — a flexible day or two helps — with about 29 days with 6+ hours of sunshine and 14.4 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Sydney Opera House at 8.7/10 (3rd of 12), just behind September at 9.2/10.
Pack light clothing, a hat and real sun protection, a packable rain layer.
Expect peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Sydney Opera House in December?
- In December, Sydney Opera House averages 21°C, 72 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 8.7/10.
- Is December a good time to visit Sydney Opera House?
- December earns a 8.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Sydney Opera House in December?
- Expect about 72 mm of rain in December. Average humidity is 73% and there are about 29 days with 6+ hours of sunshine.
Curated in Sydney Opera House
Tickets & experiences
Things to do in Sydney Opera House
Sydney Opera House, Australia. Live activities and tours from GetYourGuide, matched to this destination.