I came on here to make some observations about temperature, and found out about the mountain medallion! Climbing the mountain is a bit scary to me though, as I've only been playing since the weekend.
Also, sitting in the water cools you down? Is that where I've been going wrong? I would always run to water when I got hot but moving around in it wasn't really helping. Not even ducking under the deeper water was cooling me off.
Also, I feel that fanning yourself when you're over, say 40%wet should cool you down faster, since being wet makes any breeze feel cold. And snow doesn't work anywhere near as fast as the paper fan at the best of times. To be fair, though, sometimes I've gone from "slightly but not uncomfortably cold" to "nice warm breeze" while fanning myself. Maybe there should be an option to pour some of your stored water on your head to help cool you down?
Also, I want deer in this game. Someone suggested monkeys and lions but I don't think those are quite appropriate. Deer, now, would be like bigger rabbits and you could use deerskin to make things. Also, the freshwater places need some water birds. Swans, ducks and geese are edible and will also fight you so that adds challenge.