In reply to joe.91:
I visited in June 2011 so this advice is probably ancient history now. We started off by trying to climb on the Shamrock (which doesn't get much sunlight). We got up Thanatos which was a bit grubby (won't be dry this weekend I wouldn't have thought) and tried to finish up Odin which was in an unclimable state. We had to finish up Shamrock Tower and I can remember my partner throwing down great lumps of mud. Crap.
We then ventured over to the right of the crag (facing in) and climbed on clean rock in the sunshine. I would expect those routes on the right that we did (South-West, New West, Rib and Slab) to be dry. They're on very clean rock, they're exposed, they get plenty of sun. Unless there's any drainage lines that I wouldn't know about I don't think there's any reason to think that they wouldn't dry fast if the sun and wind are on them. It's the stuff that stays out of the sun that you have to watch out for at Pillar, I think.
Looking at your logbook, you're clearly good enough to get up these easy routes even if there's the odd wet patch. Good luck, and let us know how you get on.