Shade for tomato plants in full sun

are these outside?  I'd have thought they would be fine without shade, but I suppose the woven sheeting would work well (a couple of years ago tried using it as a weed suppressant ... weeds grew very well thank you very much  )

Come July and into August the temperature gets into the 40´s sometimes   So the plants merrily cook!  The other veg seems to be ok, it is just the toms that suffer.  I might have a go and covering some the ¨Spanish way´ with weeds and some with that green shade stuff- then I can see what is best.
Pamela