Originally Posted by
pepperbelly
It must be the heat reflected from the pavement.
On my local mup there is a stretch about 100 yards long that has shade-almost a tunnel. It feels 20° cooler there during summer.
I almost always ride where there is significant shade on the hottest days
tunnels of shade - and real tunnels also … the tunnels are often around 20 degrees cooler - often on the hotter days there will be fog near the tunnel entrances (as shown bottom pic below)
