I make the most of it by changing my sleep pattern. Late nights, early morning, midday nap if needed/children supervised.
6am Wake up and walk in a woodland or a beach, home for big breakfast/brunch.
11-2/3pm Snooze/quiet indoor or activity with the kids during hottest part of the day.
3-5pm Outdoors play. Paddling pool for kids, book for me.
5-7pm Tea and bed for kids. Cool showers all round if needed. Late night for me to enjoy cooler temps.
Yeah, it's a bit uncomfortable, esp at night, but that's the price of the beautiful mornings and summer fun. Its only unbearably hot like this for a few weeks on the year so I make the most of it, a bit like Xmas!
Biggest downside is DH doesn't cope and gets grumpy 😆