Udo myeon, South Korea offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Udo myeon, Jeju do, South Korea, is known for Seobinbaeksa Beach and the Udo Maritime Park. The best time to travel to Udo Myeon, South Korea, is from late spring to early fall (May to September), with average air temperatures ranging from 18°C to 28°C (64°F to 82°F) and water temperatures from 17°C to 26°C (63°F to 79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!