Fragkokastello, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Fragkokastello is known for the Venetian castle, Fragkokastello Castle, and its beautiful beaches. The best time to travel to Fragkokastello, 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!