Kapaa is located in Kauai County on the eastern coast of Kauai Island, between Anahola and Wailua - Kauai along Highway 56 on the banks of the Konohiki Stream near Waipouli, Opaekaa Falls, and the Nonou Forest Reserve.
Activities in Kapaa and the surrounding area include swimming, snorkeling, diving, windsurfing, sailing, hiking, biking, and golf. Nearby points of interest include Kaneohe Beach Park, Haiku Gardens, and the He'eia State Park.