Idrousa, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Idrousa is known for its proximity to the picturesque island of Andros, which is famous for its beautiful beaches and the Andros Maritime Museum. The best time to travel to Idrousa, Greece, is from May to September, with average air temperatures ranging from 75°F to 85°F and water temperatures around 72°F to 77°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!