We live in Scotland where the sun is always welcome! But last year in France in our Moho the temp was nearly 40, unbearable. Poor Dylan didn't know what to do with himself. We hung wet towels across the open door, which helped a lot. A lot,of mohos over there have these door blinds like long fluffy caterpillars, again if you wet them it brings down the temperature. I believe that in India they do this , they call them punkahs and some poor wee ,punkahwallah' had the job of of agitating them to cool the breeze (in fact I think it was on 'it ain't half hot mum' for those who remember that series). We also used one of those garden sprayers, hand held, to spray the air with cold water. Anywhere you can use cold water helps bring down the temperature.
On the way to Devon at the moment where the temp is sure to rise.........
Lesley and Dylan