There have been hot days where friends met me at a bar and asked me ”Weren’t you hot on a bike?” It was only then I realized the day was considered hot, because I had wind cooling, and they had a metal greenhouse with solar gain.
That only works if by “hot” days you mean “comfortably warm”. For actually hot weather, it’s gonna have to be evaporative cooling (sweat) and even then it gets pretty uncomfortable unless you’re going at a leisurely pace IMO.
There have been hot days where friends met me at a bar and asked me ”Weren’t you hot on a bike?” It was only then I realized the day was considered hot, because I had wind cooling, and they had a metal greenhouse with solar gain.
That only works if by “hot” days you mean “comfortably warm”. For actually hot weather, it’s gonna have to be evaporative cooling (sweat) and even then it gets pretty uncomfortable unless you’re going at a leisurely pace IMO.