It's been so hot where I live this week that 30c sounds nice. It was 36c during the day yesterday but felt like well over 40c. It felt like an oven. It's 27c right now at 1:30 am. So here's some tips- Drink a lot of water. Stick to the shade. Keep a wet towel around your neck. I wet a baseball cap and wear it. Don't be in direct sunlight light for long. If you don't have a/c, I know most don't in UK, open two windows on the opposite side of the house to create a drafted. Hang and secure a wet towel over the window where the wind enters and it will act like a natural a/c. Won't do a ton but it will lower the temps inside a few degrees. That's all I got.