Ao Nui, Thailand offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Ao Nui, Krabi, Thailand, is known for its stunning limestone cliffs and pristine beaches. The best time to travel to Ao Nui, Thailand, is from November to February, with average air temperatures around 28°C (82°F) and water temperatures near 27°C (81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!