Grad Vodnjan, Croatia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Grad Vodnjan is known for its collection of mummified saints at the Church of St. Blaise and the annual olive oil festival. The best time to travel to Grad Vodnjan, Croatia, is from May to September, with average air temperatures ranging from 20°C to 30°C and sea temperatures from 20°C to 25°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!