In reply to Mike Peacock:
I got up to Capel at 5.30 on Friday, thinking it may have been a wasted trip. Dropped off my gear and went up East Ridge of Siabod in the full moon, ground started freezing in places after the quarry workings, but the bog was definitely not frozen! Only needed headtorch for the ridge. Some graupel acculumlations and a few icy smears but didn't bother with axe, crampons or gloves. Cracking night though, no other torches visible on other mountains, and a big cloud over Snowdon massif which didn't bode well.
Late start today and not optimistic. Went up Seniors Ridge, nothing forming in Cwm Idwal, some snow in Y Garn, Cneifon Arete was totally dry, Tower Slabs was starting to form some ice but nowhere near enough. High crags were rimed up all morning.
Some icy smears on Seniors', a fair bit of turf was frozen, but in other areas it wasn't as was insulated by graupel, there were patches of consolidated refrozen snow off the path on the east side of the ridge.
Walked round rim of Cwm Cneifon and spotted some decent ice in what I think was Nameless Gully, dropped down and did that -surprisingly fat, easily enough to get screws in if I'd not been alone, and some quite big chandeliers, which I left. Walked round to top of Hidden which looked lean, but was assured it was in, so dropped down Easy and did top pich of Hidden Gully, but it was pretty crappy really. Then dropped down Gribin. Only about 4 parties in the Cwm all morning. Cracking day, glad I went.