Othonoi, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Othonoi is known for its stunning beaches, such as Aspri Ammos, and its connection to the myth of Calypso's cave. The best time to travel to Othonoi, Greece, is from June to September, with average air temperatures around 25°C (77°F) and water temperatures about 24°C (75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!