Ha ! Buy your grandchildren a large swimming pool ! .....I have an inflatable spa in my garden which is bliss ! I also live in SW France and yes, it was 38 degrees two days this week ....but sitting in the spa, then wearing a wet cozzy all afternoon kept the heat down (supposed to be bad for you, but what isn't !) ......today is lovely, nearer to 27 and much better ......just got out of my spa and now have only a sarong and flip flops on ! OR, if you have a garden and no small children for an excuse to buy a pool, buy a garden shower ....I had those before the spa, and they are wonderful ! *don't leave the hose connected, though, as the water in it gets too hot !.....when we lived in Spain, and it was 42 for weeks on end, we had a proper pool but even that was like a hot bath at 36 degrees ! Here we are issued with 'canicule' warnings (heat wave) ....drink plenty of water, use a fan, take frequent showers, keep shutters closed and windows open (could apply to curtains too) ...use a cool water spray on your face and other parts .....do not go outdoors during the middle of the day ...... all common sense really ! Also keep an eye on aged neighbours !
Soon be winter ......