Not sure if this is the right place or if I can even frame this question sensibly. But here goes. I notice when driving in my car that the sensation of heat on my skin from the sun shining through my windsreen seems to be different between the seasons. Much hotter in summer versus cooler in winter. This may be my imagination, but it certainly feels less hot standing in direct sunlight in winter than in summer (assuming a cloudless sky). My question is, how can this be? Is it my imagination or is there a difference? I am not talking the sensation of ambient temperature, more the effect of the sun on my skin. Logically, or so it seems to me, the sun's rays should feel equally as hot regardless of season.