Geojin eup, South Korea offers 1 beach perfect for sunbathing, surfing, swimming, and more. Geojin eup is known for its proximity to the scenic Seoraksan National Park and the historic DMZ Museum. The best time to travel to Geojin eup, South Korea, is in late spring (May to June) when the average air temperature is around 15-20°C (59-68°F) and the water temperature is approximately 15-18°C (59-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!