Pen Y Fan

Hey everyone,I am planning to climb up Pen Y Fan for the second time this late December.It was summer when I last went there but I do remember the routes.I was actually looking forward to seeing some snow over there,if anyone has hiked there before this time of the year would really appreciate your views on it.This is my first time ever going in a winter hike in the UK but I have been to couple of 4 and 5000ms treks before.Any tips and is Christmas time too crowded to visit there?