Karon, Thailand offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Karon is known for Karon Beach, one of the longest and most popular beaches in Phuket, Thailand. The best time to travel to Karon, 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!