Marathopoli, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Marathopoli is known for its proximity to the beautiful Proti Island and the stunning beaches of the Ionian Sea. The best time to travel to Marathopoli, Greece, is from May to September, with average air temperatures ranging from 20°C to 30°C and water temperatures around 22°C to 26°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!