It's horrible!! You just sweat and stick to everything!! On those days we're all heading for bodies of water or air conditioning. Most homes have air-con now, we don't however. I prefer to live without it but on extreme heat days the electricity grid can falter with the extra pressures of everyone using their air conditioners. Our house is pretty cool though which is great through summer, not so much through winter :/
Our humidity today was at 62% in the middle of winter, lol.