Samcheok si, South Korea offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Samcheok si is known for the Hwanseon Cave, Samcheok Ocean Railbike, and Haesindang Park. The best time to travel to Samcheok-si, South Korea, is from late spring to early fall (May to September), with average air temperatures ranging from 18°C to 27°C and water temperatures from 16°C to 24°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!