Agios Sostis, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Agios Sostis is known for its picturesque beaches and proximity to the famous Navagio Beach and Blue Caves. The best time to travel to Agios Sostis, Greece, is from late May to early October, with average air temperatures ranging from 75-85°F (24-29°C) and water temperatures around 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!