Most people I know here say that last summer was cool, and this winter was cooler than a lot of sun-kissed Aussies were expecting too.
It is essential to have a good selection of effective cold-weather clothing, and to understand the effects of water on that clothing.
For example: wet cotton clothes can kill you in the cold (google "cotton kills" or see here for more info
http://www.hikingintherockies.com/other/clothing.htm). Wet wool on the other hand, can still insulate to some degree and give you another chance!
A..