Personally I'd stay in Port Townsend as there are two nice places there. We usually stay at Point Hudson Marina and RV park as there are three restaurants on site and it's an easy 5-6 block into the downtown area. Yes the sites are gravel, but who cares with the view. Fort Worden is our other favorite place,especially the lower campground. I would make reservations NOW for April and even then you may have to change sites if you're going to be there a whole month. In Port Angeles, I would agree with the Elwha dam campground. We have stayed at both Rainbow and Gilgal in Sequim and they are kinda in between P.A. and P.T.
It doesn't really matter which place you go to, the weather is gonna be pretty much the same.
