Kato Agios Petros, Greece offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Kato Agios Petros is known for its proximity to the picturesque beaches of Andros and the historic Agios Petros Tower. The best time to travel to Kato Agios Petros, Greece, is from late May to early October, with average air temperatures around 75°F (24°C) and water temperatures around 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!