Sellia Marina, Italy offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Sellia Marina is known for its beautiful Ionian Sea beaches and proximity to the Sila National Park. The best time to travel to Sellia Marina, Italy, is from June to September, when the average air temperature is around 75-85°F (24-29°C) and the water temperature is approximately 73-79°F (23-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!