Ao Khanom, Thailand offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Ao Khanom, Nakhon Si Thammarat, Thailand, is known for its Pink Dolphin sightings and Khanom Beach. The best time to travel to Ao Khanom, Thailand, is from December to February, with average air temperatures around 27°C (81°F) and water temperatures about 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!