>>2839045
>I'm thinking worst rain scenario
Waxed cotton poncho kind of thing.
The traditional european rain protection is a wool cloak. The fabric should be brushed, densely felted fabric. In germany it's called strichloden and the cloak is called wetterfleck. Disadvantage, it soaks up water eventually, gets heavy as fuck. Waxed cotton is heavy as well, but at least it doesn't soak up water. Wool is breathable and somewhat warm (can be good or bad).