Kawaiku'i Beach Park doesn't really have a pretty sandy beach. The grass park area is a nice size and there are bathrooms and picnic tables. It's not a place you can really go to play in the water. It's very rocky and what sand is there is covered with rocks. The water here is calm so you could do kayaking paddle boarding. Not crowded at all and might be a nice place for a picnic with a nice view of the ocean.