Tambon Ko Siboya, Thailand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Tambon Ko Siboya, Krabi, Thailand, is known for its serene beaches and the nearby Mu Ko Siboya National Park. The best time to travel to Tambon Ko Siboya, Thailand, is from November to February, with average air temperatures around 28°C (82°F) and water temperatures near 29°C (84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!