Perth · AutumnMonth summary
Perth weather in September
✅ Good
🌡️ Temperature min / max
11°C – 19°C
🌧 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: September is a good time to visit Perth. December remains slightly better (+2.5 pts).
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
🎯 Quiet uncrowded beaches — ideal for coastal walks Autumn in Perth is often underrated: 19°C, 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.
Browse by month
All months for Perth
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ☀️ January | 19°C | 30°C | 5% | 0.7 | 13.1h | 9.1/10 |
| ☀️ February | 19°C | 30°C | 8% | 0.8 | 13.0h | 9.0/10 |
| ☀️ March | 18°C | 28°C | 15% | 1.3 | 11.5h | 9.0/10 |
| 🌤️ April | 15°C | 24°C | 20% | 1.1 | 10.7h | 8.2/10 |
| 🌤️ May | 12°C | 21°C | 26% | 2.7 | 9.9h | 7.5/10 |
| 🌤️ June | 11°C | 18°C | 43% | 4.0 | 9.2h | 7.0/10 |
| 🌦️ July | 10°C | 17°C | 50% | 4.0 | 9.2h | 6.4/10 |
| 🌦️ August | 10°C | 17°C | 43% | 3.9 | 10.4h | 7.0/10 |
| 🌤️ September | 11°C | 19°C | 27% | 1.7 | 11.2h | 7.4/10 |
| 🌤️ October | 12°C | 21°C | 23% | 1.4 | 12.0h | 7.9/10 |
| 🌤️ November | 15°C | 24°C | 13% | 0.7 | 13.4h | 8.9/10 |
| ☀️ December | 18°C | 28°C | 6% | 0.3 | 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 19°C, 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°C
- 🌧 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 19°C 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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