Busselton in September
September is right in the heart of spring for Busselton, and the weather has a definite personality this time of year.
Daytime highs average 18.2 degrees, dropping to 10.0 degrees overnight. That's a 8-degree swing between day and night. It's cool but manageable. A jumper handles most of it.
At 18.2 degrees, September sits 5.0 degrees below the annual average of 23.2 degrees.
Rainfall in September averages 31mm over about 7 days. That means roughly a 23% chance of rain on any given day, decent odds for a dry day.
Solar exposure averages 17.7 MJ/m2 per day in September, with UV levels in the very high range. You'll want SPF 50+ and a decent hat.
The Comfort Score for September comes in at 6.2/10, solidly pleasant.
For your suitcase: layers you can peel on and off, and SPF 50+ sunscreen and a hat.
Check the data table below for the full picture, or compare Busselton in September with another destination.
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 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 |