Anthoussa, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Anthoussa, Epirus, Greece, is known for the historic Anthoussa Castle and its proximity to the stunning Acheron River. The best time to travel to Anthoussa, Greece, is from late May to early October, with average air temperatures around 75°F (24°C) and water temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!