Marpounta, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Marpounta, Thessaly, Greece, is known for its proximity to the stunning beaches and natural beauty of Alonissos Island in the Northern Sporades. The best time to travel to Marpounta, Greece, is from June to September, when the average air temperature is around 77°F (25°C) and the water temperature is approximately 75°F (24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!