Lanikai Beach, Oahu beaches. Hawaii has some of the best beaches in the world, like Lanikai Beach. So for beaches on Oahu, add this to your list of things to do during your Hawaii vacation on a budget. It deserves a spot on your U.S. travel bucket list as a beach destination! You can go snorkeling here too and there's a nearby hiking trail for a fun Hawaii vacation so make sure packing for what to wear and what to pack is for beach and hikes in Oahu!