Hi, I actually started on 22/12. The weather was really kind to me. I actually had a few days of lovely sunshine. In the main dry, bright and cold, at least until Galicia, where I had quite a bit of rain. There was a period of low temperatures in the morning.-15. I was told this was sort of freakish for Spain. Due to the frost in Spain, The uk had a shortage of veg , I saw fields of ruined cauliflower being run over by tractors. The albergue leaving time is no where as strict as spring/summer Camino. During the frosty periods, There was a big difference, leaving at 10am.... as opposed to 8am. Your itinerary seems to be spot on.20/25ks per day perfect. From sjpd, I strolled along to valcarlos. The albergue is amazing. Modern,fully equipped and warm. 5 Euro.Key at town hall. When I arrived, the school weans at the adjacent school, were signing silent night in English.Braw! No snow at all. Don't worry about the weather, you'll be to preoccupied with the camaraderie that comes with a winter Camino. Aw the best on your walk!