Sveta Marina, Croatia offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Sveta Marina is known for its beautiful diving spots and the nearby Ucka Nature Park. The best time to travel to Sveta Marina, Croatia, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures around 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!