Presumably you are camping, TD?
Shade is hard to find in campsites unless you are lucky, these days! In summer, the trick is to position your tent, even next to a medium sized bush, so that the bush gives some shade from the SETTING sun! This will give the tent and contents time to start cooling down for the evening stretch! Also open all doors and windows as soon as you get "home", but put up gauze before sun sets, for mozzies!
A portable desktop-type fan is essential for your tent or caravan, as most sites now have power, and totally negates mozzies and other insects as you sleep, besides cooling you down!
I have no poroblem with driving windows-up, aircon on during the hot hours...Sprocky just cools his feet to minimise the smell, I think?
Drink lots of water, even in between beers or what not. Alcohol is a dehydrating agent!

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