I have recently discovered the lean-to, a shelter with three walls. It seems considered as a shelter with more proximity to the nature.
I have some worries though, regarding the wind and the warmth. I suppose it is usually set up so that the windier sides match the walled sides, but I am afraid it is not very isolating overall and that the temperature is very close to the outside temperature.
I plan on sleeping in closed shelters for all my trip but one night in a lean-to so I am wondering what to pack, apart from my sleeping bag, a mattress and a reusable emergency blanket in case I am cold during the night.
I will be hiking in October in Quebec. According to historical temperatures, I expect it will be 0-5°C outside and I have a sleeping bag for about 0 to -5°C.
My question is, do I need a tent to sleep inside a lean-to, or any other gear on top of my sleeping bag?