Hi, we will be in Lucerne and then Gimmelwald in the middle of August and I am curious about the weather there. Will it ever get cool enough to bring a jacket? If I don't bring a jacket is a hooded sweatshirt ok to wear around or would I be looked at like a bum lol? (I live in the PNW where all we were are hoodies, but know that it isn't like that in other places) I am only bringing a carry on sized bag and a backpack so space is limited.
Thanks!