I would not rely on blankets, for one thing, they increase the odds of a bug problem quite a bit. I am pretty sure it was the nice puffy comforter in the albergue in Zafra on the Vdlp that wound up giving me my first confirmed case of bed bugs. On the Salvador, the albergues in Pajares and Bendueños have the luxury of heat, so if anything you will be too warm depending on the comfort level of the others who are there. But going in October, I would bring a sleeping bag. Buen camino, Laurie