Not as bad as many here, never blistering or heat stroke. I was born in a hot climate and lived there til I was 10, and we were all well aware of the dangers of too much sun. My mum always had a hat and was as covered as she could be, although she also has vitiligo, so had to cover up as parts of her skin have no melanin, so no protection at all. My dad has typically English fair skin and used to fall asleep in the sun: he now regularly has small patches of skin cancer that he self treats at home with a chemo cream that burns off tumours as they appear (mainly on his face). My brother (nearly 50) is waiting to have skin cancer as he was in the hot climate his whole life, and pretty reckless as a surfing teen.
I'm terrible, though, I adore being in the sun, it makes me feel alive, so I do try to make sure I'm protected when in hot climates. I don't burn that easily, though, so am luckier than many.