Assos Lechaio, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Assos Lechaio, Peloponnese, Greece, is known for its proximity to the ancient city of Corinth and the archaeological site of Ancient Corinth. The best time to travel to Assos Lechaio, Greece, is from May to September, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 22-26°C (72-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!