Terry...what is winter actually like there? Just wondering...never been in the area.
G'Day Johnnie, Oz is a bit like the US, in that it's such a large piece of real estate that the temps at the top end in winter can be as hot as some countries in summer. A cold day in Darwin would be a hot day in England, for example.
Here in Melbourne at the bottom of the country, apart from Tasmania (the only land mass between Oz and Antarctica) we have the coldest winters generally, but the temps rarely fall below 50 deg F, so it's pretty good. I built my K2 "Bitsa" over the last winter outside in my open patio, and it was pretty pleasant. I store my bikes and equipment in my "colourbond" steel garage, and this time of the year it's unbearably hot inside, so the patio, which is open on three sides, is much more pleasant in summer for wrenching! Cheers, Terry.
http://www.visitvictoria.com/Information/Melbourne-weather