I have lived in the Vancouver area for 15 years and during that time have had 6 different bikes … an 85 VR, and 87 VR, an 06 RSMV, an 03 Wing, an 05 Road Star, and a 13 Victory CCT.
I can tell you from my experience being in those traffic jams many times that the air cooled Vic and the air cooled Roady felt minimally hotter than the other liquid cooled bikes. Minimally meaning not enough to be an issue.