Kahanamoku Beach

I personally frequent this beach a lot, as it doesn't get quite so packed as Waikiki Beach just down the road a little bit.  There is also a small man-made lake behind the beach where kids (and adults) can play without the waves to worry about. Several sections in the beginning, do have a lot of rocks when you first enter.  So if you are wanting to go in and out of the water, bring water shoes to protect your feet, or go more down the beach near the bend where it is usually a lot sandier to enter.  A descent amount of parking, that cycles through quite frequently with beach-goers and surfers coming and going.  It right next to one of the Marinas and there is McDonalds across the street and a small hole-in-the-wall pub on the corner, that serves pizza as well as other foods.