Coming up in August you say.
Be prepared for the westerly winds then.
Every year without fail we get westerly winds during August.
The past few winters have been rather mild so don't expect anything different again this year.
Two winters ago I went down to Puckapunyal to visit relos during August and spent my time down there in Jeans and t-shirt + long sleeve shirt.
Came back to QLD and was back in shorts and t-shirts.