Weather next week

I’m sure this touristy post with be annoying for locals, I’m sorry! I looked at the forecast and it’s all 80s until I arrive then it’s low 70s. I’m kinda bummed.

Is 70 degrees too cool for the beach?

Also any recommendations for things to do or see next week? I’m sure there’s a million posts again I apologize I don’t know how to search them, just looking for fun for the kids, been planning this trip for a year+ and bummed at the forecast.