Suyeong Gu, South Korea offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Suyeong Gu is known for Gwangalli Beach and the Busan International Fireworks Festival. The best time to travel to Suyeong Gu, South Korea, is in late spring (May) or early fall (September), with average air temperatures around 20-25°C (68-77°F) and water temperatures approximately 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!