September · Australia
Best time to visit Perth in September Weather, crowds & prices
Weather in Perth in September
Average temperature 15°C, 63 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).
September score
8.8/10
Ranked #7 of 12 months
- Avg temp
- 15°C
- Rainfall
- 63 mm
- Humidity
- 73%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Perth scores 8.8/10 for sightseeing and cultural travel - ranked #7 of 12. Expect around 15°C, 63 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Perth spreads along the Swan River, with Kings Park, Indian Ocean beaches, and Rottnest Island close by.
September is one of the strongest months in Perth (7th)
Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 63 mm of rain this month — a flexible day or two helps — with about 29 days with 6+ hours of sunshine and 11.9 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Perth at 8.8/10 (7th of 12), just behind November at 10/10.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Budget for mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Perth in September?
- In September, Perth averages 15°C, 63 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 8.8/10.
- Is September a good time to visit Perth?
- September earns a 8.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Perth in September?
- Expect about 63 mm of rain in September. Average humidity is 73% and there are about 29 days with 6+ hours of sunshine.
Curated in Perth
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Perth, Australia. Live activities and tours from GetYourGuide, matched to this destination.