September · Australia
Best time to visit Sydney Opera House in September Weather, crowds & prices
Weather in Sydney Opera House in September
Average temperature 16°C, 58 mm of rain, about 28 days with 6+ hours of sunshine and 66% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.2/10
Ranked #1 of 12 months
- Avg temp
- 16°C
- Rainfall
- 58 mm
- Humidity
- 66%
- Days with 6h+ sun
- 28
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Sydney Opera House scores 9.2/10 for sightseeing and cultural travel - the single best month of the year. Expect around 16°C, 58 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Harbor sails and forecourt light shine across November through March warmth.
September in Sydney Opera House tops the year's climate scores
Temperatures hover around 16°C (61°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 58 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 11.9 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Sydney Opera House at 9.2/10 — the reference point every other month on this page is measured against.
Pack layers you can shed by midday plus one warm layer for the evening, 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 September?
- In September, Sydney Opera House averages 16°C, 58 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 9.2/10.
- Is September a good time to visit Sydney Opera House?
- September earns a 9.2/10 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 September?
- Expect about 58 mm of rain in September. Average humidity is 66% and there are about 28 days with 6+ hours of sunshine.
Curated in Sydney Opera House
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Sydney Opera House, Australia. Live activities and tours from GetYourGuide, matched to this destination.