What fabric is considered best for hiking in a kilt in cold/wet weather?

I guess wool has to be the warmest, but would be very uncomfortable when cold and wet, I have heard they absorb a LOT of water.

How are the poly/vis and blends for warmth and water resistance?

I've done a bit of hiking in a kilt, but not much in the rain. When I was last in rain I had a raincoat that almost covered the kilt, only the edge got wet.

I'm preparing for winter