Grscica, Croatia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grscica, Dubrovnik Neretva, Croatia, is known for its picturesque bay and traditional Dalmatian stone houses. The best time to travel to Grscica, Croatia, is from June to September, when the average air temperature is around 75°F (24°C) and the sea temperature is approximately 77°F (25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!