Tambon Karon, Thailand offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Tambon Karon, Phuket, Thailand, is known for Karon Beach, one of the longest and most popular beaches in Phuket. The best time to travel to Tambon Karon, Thailand, is from November to February, when the average air temperature is around 28°C (82°F) and the water temperature is approximately 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!