Busselton in September
So, what's Busselton actually like in September? In a word: mild. It's spring, and the days are averaging 18.2 degrees.
Daytime highs average 18.2 degrees, dropping to 10.0 degrees overnight. That's a 8-degree swing between day and night. Manageable with a decent layer, and you'll warm up by midday.
At 18.2 degrees, September sits 5.0 degrees below the annual average of 23.2 degrees.
The rain data says 31mm over 7 days. Nothing dramatic.
Sunshine-wise, September delivers around 17.7 MJ/m2 of daily solar radiation. UV sits in the very high category. You'll want SPF 50+ and a decent hat.
September scores a respectable 6.2/10 for overall comfort.
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
- A jumper or light cardigan for flexibility
- A light rain jacket just in case
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How September in Busselton stacks up against major cities around the world.
About 2 degrees cooler and considerably drier.
About 8 degrees cooler and considerably drier.
About 9 degrees cooler and considerably drier.
How September Compares
Busselton's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 30.2 | 17.2 | 1mm | 7.2 |
| Feb | 31.3 | 18.2 | 2mm | 6.4 |
| Mar | 28.1 | 16.0 | 11mm | 8.3 |
| Apr | 25.7 | 14.3 | 9mm | 9.6 |
| May | 21.6 | 13.7 | 82mm | 7.4 |
| Jun | 17.7 | 10.9 | 99mm | 4.0 |
| Jul | 16.6 | 10.4 | 166mm | 2.6 |
| Aug | 16.8 | 11.6 | 200mm | 2.6 |
| Sep | 18.2 | 10.0 | 31mm | 6.2 |
| Oct | 20.6 | 11.7 | 38mm | 8.4 |
| Nov | 23.4 | 12.5 | 18mm | 10.0 |
| Dec | 28.2 | 14.9 | 5mm | 8.4 |