It's maybe stating the obvious, but how wet you get in your kilt probably depends on what it's made of.. My normal hill-walking kilt is a 40+ year old wool one which is about 13oz weight. In heavy, driven, rain I've been wet through to the skin on several occasions - though perfectly comfortable (regimental helps there ). My "winter" hill kilt hasn't been tested in that kind of rain yet, but the military spec 18oz material is almost felted on the outside & gives the impression that it will shed rain much better.