Ditto bare paws =!= bare feet in shoe-wearing cultures. Human beings, in our culture, don’t walk around barefoot.
Dogs do and their paws are pretty much leather.
I have been in one part of the world (rural PNG) where people did indeed go barefoot much of the time, and their feet adapted and were leathery too, even when walking on the hottest rocky surfaces. It was impressive to watch. I asked some of the women if I could adapt my own feet in the same way. They said yes - when the men went to town to do migrant labor, they would wear shoes and their feet would adapt to shoes, then they would come back to the village and re-condition their feet to barefoot walking, which would take a couple of weeks or so. I did notice how many people were missing a toe or two, however, and decided not to risk it after all!
In any case, I really don’t think a normal hardy breed of dog is going to have problems unless the tarmac gets really hot, which 23 degrees is NOT going to cause, outside of MN Hysteria Land where everything over 20 is a heatwave and will cause mass death etc.
Again, if people own silly breeds, that may be a different matter.