Olib, Croatia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Olib is known for its pristine beaches and the historic Church of St. Anthony. The best time to travel to Olib, 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!