Kraj, Croatia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kraj, Primorje Gorski Kotar, Croatia, is known for its proximity to the beautiful Adriatic Sea and the nearby Krk Island. The best time to travel to Kraj, 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!