Agioi Theodori, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Agioi Theodori is known for its proximity to the Corinth Canal and the Loutraki Thermal Spa. The best time to travel to Agioi Theodori, Greece, is from late May to early October, with average air temperatures ranging from 75-85°F (24-29°C) and water temperatures around 73-79°F (23-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!