Waimanalo Bay is a picturesque bay located on the southeastern coast of the island of Oahu in Hawaii. The bay is approximately 6 miles long and 1 mile wide and is considered one of the best beaches on the island. The beach is surrounded by lush tropical vegetation and is known for its clear blue waters and soft, white sand.

Waimanalo Bay is a popular destination for water activities such as swimming, snorkeling, and surfing. There is also a designated surf spot in the bay called "Makai Pier" that is favored by local surfers. For those looking for a more relaxed experience, the beach offers plenty of space for sunbathing, picnicking, and beachcombing.

The bay is also home to several Hawaiian cultural sites and natural attractions, including the Kaiona Beach Park, a historic Hawaiian fishing village, and the Waimanalo Bay State Recreation Area. The recreation area offers camping facilities and hiking trails, allowing visitors to experience the natural beauty of the area.