This mod adds hypothermia and realistic cold weather to Skyrim. You jump in the river to swim across… aaaaand you re-emerge from the water completely fine, not hypothermic at all, not even blue fingertips.

There’s no way across, but you HAVE to get to Dawnstar for a quest, so, you make the decision. Picture this: You’re going up from Whiterun to Dawnstar and you come across a wide river.