just reflecting on my previous rushed (and poorly punctuated) comments to OP - we usually surf in SW/Wales over the summer and are used to "summer" waves, but Scarborough is nearest surf-able spot to home and we have started travelling over just to surf
I have been chatting to lots of folks learnt a bit about the Scarborough area - I am sure more knowledge able folks than me will chip in though
North Bay seems to get nice swell towards the south end, even if 1 or 2 foot is forecast it can be fun for beginner / intermediate. A couple of folks have mentioned to me that Scarborough North can be a bit fast/steep with larger wave sizes because the shape of the beach has changed over recent years, no idea if that is ture. The other issues are tide and rocks, the beach has plenty of areas of rock which you can only see if you read the waves carefully, and at high tide there is no beach and the waves are hitting the sea wall

South Bay seems to have very gentle surf, this week when North Bay had a couple of foot of surfable wave South Bay had nothing - its awkward to get to also so I am yet to be convinced it is worth the drive to surf there
Cayton has space, easy parking and seems to offer variety for beginner / intermediate, wave sizes seem similar to Scarborough North. My next trip will be there