Thanks for your words of concern Dave but we manage to cope pretty well.
The heat is really only a factor for a couple of months in summer, the rest of the year is probably a bit warmer than you're used to but days in the 20°- 30° range are great.
I guess it's what we're used to.
Of greater concern at the moment are the bushfires in New South Wales, Victoria and Tasmania. No reports of lives lost but major damage to a number of towns in Tas, and over 100 seperate fire in NSW alone. My state of South Australia seems to have escaped any major fires (so far), even though the heat has been intense.
Here's an example.
I have a friend who w*rks on a two weeks on / two weeks off basis at the Moomba gas fields in the north-east of SA. He sent a couple of pics taken at his accommodation unit on Friday two weeks ago when it reached 45° in Adelaide.
All of a sudden 45° didn't seem so bad.
Air conditioning is pretty well a must during summer but the brutal winters you suffer are unknown here.
What we think of as "really cold" is anytime it gets below 15° during the day.
As I said, "It's what we're used to".