Agia Pelagia, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Agia Pelagia, Attica, Greece, is known for its picturesque beaches and the nearby Monastery of Saint Irene Chrysovalantou. The best time to travel to Agia Pelagia, Greece, is from May to October, with average air temperatures ranging from 70°F to 85°F and water temperatures from 70°F to 78°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!