Lived in Penzance for a while when we first moved down here, walked the coast path to it and one time had a go at Tombstoning with the guys from the pub ? from the rocks between there and The Minack
You can go to different beach every day of the year in Cornwall, I'm within about 60 miles of all of them. Shame I'm not a massive beach lover, prefer the Moors.
Cheers, D.