Gyeongju si, South Korea offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Gyeongju is known for its historical sites such as Bulguksa Temple and Seokguram Grotto. The best time to travel to Gyeongju-si, South Korea, is in April when the average air temperature is around 15°C (59°F) and the average water temperature is approximately 12°C (54°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!