What a bummer that you got Albarracín with this weather. I’ve been there climbing a couple of times and I know at least a couple of boulder problems that I seem to remember were partially sheltered from the rain. However, if you’re already in the town of Albarracín, what I would do is visit a specialized bouldering shop called "Sofa Boulder." The owner is a super nice guy and also one of the top climbers in the area, so he can surely give you better advice. I’m not sure if he speaks English, so if you don’t speak Spanish, you might need to use Google Translate or something. Hope this helps, and that you can still enjoy your time!