For those of you that don't live in an area of the world where the standard greeting is: person A "Hot enough for ya?" Person B responds with: "Well, it's not so much the heat, it's humidity", let me give you an example of what an average 91 degree day is like.
It's like walking outside and being smothered with a wet blanket that's been in the dryer only half a cycle. It's not wet enough to be called "drenched" but you're drenched by the time you get back inside and shrug it off. It ways you down.
It's the opposite of a cold shower, air conditioning, and a ceiling fan on high.
It's a sauna with no walls, no escape, and less dry.