Zefiria, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Zefiria is known for its proximity to the stunning beaches and unique volcanic landscapes of Milos Island. The best time to travel to Zefiria, Greece, is from May to September, with average air temperatures around 75°F (24°C) and water temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!