I packed a bunch of summer clothes when I first came over in 2012, and then had to buy suitable things to actually wear. I was staying huddled up under blankets so much at first (in summer!) that I gave myself a rule: if the sun is shining and the temperature is at least double digits (10+ celsius), then I had to go outside.
My second summer here was amazing, though. So many sunny and warm days, and that was really reassuring. But then I didn't experience another summer as good as that until last year.
Anyway, all of that to say it took me about five years here before I noticed that I was acclimated to the weather here. I came from Arkansas, where 40C in the summer is normal and you welcome storms and rain just for the temporary relief from the oppressive heat. Over here, I still scoff when they call a few days of 30C a "heat wave"... but at the same time, on warm days in the garden, I sometimes pull my chair under the shade of Tree Tunnel, rather than bask in the full power of the sun *. And I have been known to barbecue in the rain in the last few years.
* Is the sun hotter here? Ithe don't mean the air. I mean the rays from the sun... has anybody else noticed that they more intense (when it's sunny enough to judge)? Or maybe it isn't and I just didn't spend much time outdoors in the US (because Arkansas... it was 40C and humid out there. Ugh!) so I don't have a baseline memory to compare this to. It's a weird feeling... there could be a cold breeze blowing and I'm on the verge of cold, but I can feel the sun penetrating my skin.