Interesting thread, it's always fascinating to hear about others experience/state.
Though I have heard the expression "just came out from the shower" before, and it doesn't really say much, except that it sounds exaggerating. I mean mate I don't doubt that you sweat a lot of course, but after a shower with your clothes on, there would not be a single spot on your entire clothing dry, and you could also out a bucket under your jeans and wrap out at least two liters of water (sweat) from your jeans only. Is that how much you sweat after walking one hour? Did you wrap two liters out from your jeans?
I can give a couple of examples: I use to walk home from my university here in Hong Kong, it's a 12-15 min walk, downstairs. For about a month ago, the weather on the evenings was about 32 degrees and some 75 per cent humidity. After the walk I had large sweat stains and front and back, and the sweat also showed through my jeans if I had jeans. My socks changed color because of the sweat.
Now, it's around 30 degrees and just over 60 per cent humidity. I walk the same way and front and back are still stained, but I don't get through the jeans if it's not 70 per cent humid or more. Humidity is worse than temperatures. In both cases I had friends walking the same way; none even sweated through a single clothing or even at forehead.
Also by only standing in the sun I will begin to drip, but then "only" between my breast muscles and the lower/mid-lower back. A couple fo weeks ago, 9 a.m., standing in the morning sun chatting with classmates. Had to go in to the lab again after 3-5 minutes, because my shirt started to change color in the front, which was directed at the sun.
My magic border seems to go at 26 degrees, 70 per cent humidity. If it's over any of that, I sweat by just sitting down.
Needless to say, during workout, I look like a complete freak. Even though air cindition inside, if I play squash for an hour, there is a darker color from sweat on about 90 per cent of my t-shirt. I can take it of and wrap the sweat out. Same result if i jog or doing skip rope outside for 20 min, if it's 25 degrees.