Perth · AutumnMonth summary
Perth weather in September
✅ Good
🌡️ Temperature min / max
52°F – 66°F
🌧 Rainy days
27% of days
☀️ Sunshine
11.2h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.4/10
📅 📅 Best month
December (9.9/10)
Quick decision
Should you visit Perth in September?
✅ Good
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: Favourable conditions in September (7.4/10). December scores higher but the gap is small.
By trip type
Perth in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
Autumn in Perth is often underrated: 19°F, golden light and declining crowds. An interesting window. Expect rain on 27% of days — a light raincoat in the bag is recommended. Not the best window, but acceptable if dates are constrained. December (9.9/10) is significantly better if possible.
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All months for Perth
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ☀️ January | 66°F | 86°F | 5% | 0.0in | 13.1h | 9.1/10 |
| ☀️ February | 66°F | 86°F | 8% | 0.0in | 13.0h | 9.0/10 |
| ☀️ March | 64°F | 82°F | 15% | 0.1in | 11.5h | 9.0/10 |
| 🌤️ April | 59°F | 75°F | 20% | 0.0in | 10.7h | 8.2/10 |
| 🌤️ May | 54°F | 70°F | 26% | 0.1in | 9.9h | 7.5/10 |
| 🌤️ June | 52°F | 64°F | 43% | 0.2in | 9.2h | 7.0/10 |
| 🌦️ July | 50°F | 63°F | 50% | 0.2in | 9.2h | 6.4/10 |
| 🌦️ August | 50°F | 63°F | 43% | 0.2in | 10.4h | 7.0/10 |
| 🌤️ September | 52°F | 66°F | 27% | 0.1in | 11.2h | 7.4/10 |
| 🌤️ October | 54°F | 70°F | 23% | 0.1in | 12.0h | 7.9/10 |
| 🌤️ November | 59°F | 75°F | 13% | 0.0in | 13.4h | 8.9/10 |
| ☀️ December | 64°F | 82°F | 6% | 0.0in | 13.8h | 9.9/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Perth averages 66°F, 27% rainy days and 11.2h of sunshine per day. Overall weather score: 7.4/10.
See methodology →
Comparison
September vs December (best month)
The best month is December (score 9.9/10). Difference:
- 🌡️ Max temperature : +9°F
- 🌧 Rainy days : -21%
- ☀️ Sunshine : +2.6h/day
FAQ
FAQ — Perth in September
Is September a good time to visit Perth?
September is an acceptable time for Perth (score 7.4/10). Conditions are decent but not optimal — consider December (9.9/10) if possible.
What to do in Perth in September?
With 66°F max and 11.2h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Perth
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