Yes and no. This site will tell you the forecast at the lifeguarded beaches.
http://oceansafety.ancl.hawaii.edu/v/1.0/index.asp?i=hawaii&shid=14
The rest you have to know from experience.
Having lived on the west side, in Kohala, I can tell you that all the Kohala beaches are affected by a true High Surf Warning of a WNW swell such as is due Sunday--Monday -- except for Anaeho'omalu, which is typically going to stay open. It has the most reef protection, and you won't see 15-30 foot waves there.
The little bays at Mauna Lani beach club and Spencer are generally calm little coves, but when the northwest swell hits, it comes right at them.
The Hilton will also be open. I have heard that the lagoon there is public access OK, as a legal battle was fought over that.
Kikaua Point should be fine. It has a rock barrier like Onekahakaha.
Kahalu'u is not immune to high surf. I've seen it closed, and it's on the hazardous list right now, as are Magic Sands, Spencer, and Hapuna.
The beach at the King Kam hotel/ Kailua pier, might be all right.
This is an excellent ocean safety page:
http://www.aloha.com/~lifeguards/hazards1.html
Ahalanui and Richardson's are both listed as hazardous right now (on the site).
Peg, Ahalanui is the warm pond that is a park. I'm sure that's the one you remember.
The problem with sissified is not enough water exchange to clean the water.