Sydney · AutumnMonth summary
Sydney weather in September
✅ Good
🌡️ Temperature min / max
10°C – 20°C
🌧 Rainy days
24% of days
☀️ Sunshine
10.6h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.5/10
📅 📅 Best month
December (8.2/10)
Quick decision
Should you visit Sydney 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: Sydney in September: 20°C and 10.6h of sunshine. Decent, but not the peak.
By trip type
Sydney in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in September
🎯 Quiet uncrowded beaches — ideal for coastal walks Autumn in Sydney is often underrated: 20°C, golden light and declining crowds. An interesting window. Rain risk remains low (24% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if December (8.2/10) remains theoretically better.
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All months for Sydney
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 20°C | 26°C | 43% | 3.4 | 12.0h | 7.9/10 |
| 🌤️ February | 19°C | 26°C | 47% | 3.8 | 11.9h | 7.8/10 |
| 🌦️ March | 18°C | 24°C | 51% | 5.1 | 10.7h | 7.4/10 |
| 🌤️ April | 15°C | 22°C | 33% | 2.6 | 10.0h | 7.6/10 |
| 🌤️ May | 11°C | 19°C | 28% | 2.5 | 9.2h | 7.2/10 |
| ⛅ June | 9°C | 17°C | 32% | 2.5 | 8.7h | 7.0/10 |
| ⛅ July | 8°C | 17°C | 24% | 2.4 | 9.0h | 7.1/10 |
| 🌤️ August | 9°C | 18°C | 24% | 2.2 | 9.8h | 7.2/10 |
| 🌤️ September | 10°C | 20°C | 24% | 1.8 | 10.6h | 7.5/10 |
| 🌤️ October | 13°C | 22°C | 36% | 2.4 | 11.5h | 7.7/10 |
| 🌤️ November | 16°C | 23°C | 37% | 2.7 | 12.6h | 7.9/10 |
| 🌤️ December | 18°C | 25°C | 34% | 2.1 | 12.9h | 8.2/10 |
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, Sydney averages 20°C, 24% rainy days and 10.6h of sunshine per day. Overall weather score: 7.5/10.
See methodology →
Comparison
September vs December (best month)
The best month is December (score 8.2/10). Difference:
- 🌡️ Max temperature : +5°C
- 🌧 Rainy days : +10%
- ☀️ Sunshine : +2.3h/day
FAQ
FAQ — Sydney in September
Is September a good time to visit Sydney?
September is an excellent time to visit Sydney (score 7.5/10). With 20°C, 10.6h of sunshine and 24% rain, conditions are very favourable.
What to do in Sydney in September?
With 20°C max and 10.6h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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