Risika, Croatia offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Risika, Primorje Gorski Kotar, Croatia, is known for its beautiful sandy beach called Sveti Marak. The best time to travel to Risika, Croatia, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures about 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!