The thing about summer, or rather about being outside in the middle of the day in summer, is that there's no actual solution, other than "don't do it".
The sun is will burn you, so you wear suncream: it's hot and the cream just makes you sweat more, and you sweat the cream off. Wear a hat: sweat under hat; don't wear a hat: burn. Wear light colors to help with heat: suncream and deodorant turns them yellow; wear dark colors: melt. And so on.
The easy option would be "things in summer just happen in the evening instead", but people don't go for that for some reason.












