Silo, Croatia offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Silo, Primorje Gorski Kotar, Croatia, is known for its proximity to the beautiful beaches of the island of Krk and the historic Church of St. Nicholas. The best time to travel to Silo, 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!