Sveti Martin, Croatia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sveti Martin, Dalmatia, Croatia, is known for its proximity to the Krka National Park and the historic city of Sibenik. The best time to travel to Sveti Martin, Croatia, is during late spring or early fall when the average air temperature is around 20-25°C (68-77°F) and the water temperature is 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!