Yes roof work is a royal PITA. I absolutely have to wear sunglasses and even then it's tough on the eyes. Humidity you say? Surely you jest LOL. I miss Arizona for the very reason that humidity is usually very low, unlike Texas where a shower is pointless because you're soaking wet all day long.Actually, the humidity during monsoon is a real PITA.
First, the sun reflects brightly off the roof coating. Like being in a roaster oven.
But - you cannot work in the morning because dew is on everything on the roof. Grrrr