I am a Queenslander... anything under 23c and I am near death. Winters here get between 4-9c at the coldest and it is normally only for an hour in the middle of the night. There is a large temperature fluctuation between day and night, I think that is the biggest difference. In winter it can be 23 at mid day and drop to 16 at night or lower. In summer today my thermostat read 31 as the high, but now it is 23. So even in the summer when it is hot it cools off to a nice temp at night...most nights anyway.
The climate is a little different than in other areas I lived. I stayed in Michigan, Pennsylvania and New York. I have family in Chicago and St.Paul. I lived in Århus, Denmark and France also. In Australia the outback gobbles up the humidity so the heat doesn't choke you to death in the same way.
I will say this much though, in those cold climates the indoor heating and insulation rocks! Here since it doesn't really get cold enough to freeze pipes nothing is insulated. There is on central heating..no radiators. So when it is 9c it is inside your home too, in your bedroom in your bathroom.. sometimes it can drop to 0 for short stretches.
In areas where it snows you need to deal with all the mess, but at least you have cosy warm homes. When I lived in Buffalo I was in a t-shirt in my apartment when it was -40c outside,
if anyone else remembers that cold spell that lasted 6 weeks in 2014? In Queensland I am wearing gloves, jumper, thick pants, etc in the kitchen when I sip my morning coffee.
Also in Queensland we do deal with extreme UV. Sunscreen is a must if you are outside longer than. 3 min. I am not joking either. You can tell who the tourist are when they are lobster red from not taking the Australian sun seriously. Not to mention all the Australians who get some sort of carcinoma.
I would still rather battle the sun over snow. Snow is pretty to look at! Not to live in