Margaret River in September
September in Margaret River is peak spring, and the weather reflects it. You're looking at average daily highs of 16.9 degrees.
Expect the mercury to hit around 16.9 degrees during the day and settle at 10.6 degrees after dark. The temperature stays pretty consistent through the day. Manageable with a decent layer, and you'll warm up by midday.
At 16.9 degrees, September sits 4.2 degrees below the annual average of 21.1 degrees.
Rainfall in September averages 40mm over about 10 days. That means roughly a 33% chance of rain on any given day, pack a compact umbrella just in case.
Solar exposure averages 16.6 MJ/m2 per day in September, with UV levels in the very high range. You'll want SPF 50+ and a decent hat.
At 4.8/10 on the Comfort Score, September is middle of the road.
For your suitcase: a decent jumper or fleece, and SPF 50+ sunscreen and a hat.
The full data breakdown is below. You can also see how other Australian cities compare in September.
September at a Glance
Temperature Range
Daily temperature range in September. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Layered clothing for mild to cool conditions
- A waterproof jacket or compact umbrella
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How September in Margaret River stacks up against major cities around the world.
About 3 degrees cooler and considerably drier.
About 9 degrees cooler and considerably drier.
About 10 degrees cooler and considerably drier.
How September Compares
Margaret River's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 26.4 | 16.4 | 9mm | 9.7 |
| Feb | 27.4 | 17.0 | 3mm | 9.1 |
| Mar | 25.2 | 15.1 | 5mm | 10.0 |
| Apr | 24.4 | 13.8 | 5mm | 10.0 |
| May | 21.3 | 14.4 | 140mm | 6.7 |
| Jun | 17.1 | 11.7 | 110mm | 3.4 |
| Jul | 16.0 | 11.5 | 199mm | 2.0 |
| Aug | 16.1 | 12.6 | 245mm | 1.8 |
| Sep | 16.9 | 10.6 | 40mm | 4.8 |
| Oct | 18.7 | 12.1 | 58mm | 6.3 |
| Nov | 20.3 | 12.6 | 35mm | 8.3 |
| Dec | 23.2 | 14.1 | 19mm | 10.0 |