Manoa Falls or Waimea Falls, waterfalls in Oahu Hawaii. For US hiking trails in Hawaii, there are waterfall hikes on Oahu to choose during Hawaii vacation on the island. Manoa Falls is near Honolulu and Waikiki, and Waimea Falls is on North Shore. People go swimming at both Oahu hikes. Outdoor travel destinations and activities for the bucket list for budget adventures! Put hiking gear for what to wear on Hawaii packing list.