Ammoudia, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Ammoudia, Epirus And Western Macedonia, Greece, is known for the Acheron River and its mythological significance as the river to the underworld in Greek mythology. The best time to travel to Ammoudia, Greece, is from June to September, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 24-26°C (75-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!