It's important to remember that figures normally quoted for wave heights are significant wave heights. The biggest sets are typically 50% or more larger.

Yesterday evening at M6 to the west of Ireland the SWH was a very impressive 14m, the biggest swell 24m! That must look quite amazing, 24' is scary.

The long period swell has now reached west Cornwall

Currently a 7m swell at Sevenstones off Lands End, (up to 7.6m at one point) meaning the biggest waves are well 10m. I may be in luck with seeing a 30ft wave at Sennen. It may be totally blown out and just a white mess, but fingers crossed.

MagicSeaweed giving a 5 star rating and a near 30' surfable wave forecast for the Cribbar Reef at Newquay.

Graham
Penzance