Sikia, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sikia, Peloponnese, Greece, is known for its proximity to the historical site of Ancient Corinth and the scenic beauty of the Corinthian Gulf. The best time to travel to Sikia, Greece, is from late May to early October, with average air temperatures ranging from 70°F to 85°F and water temperatures from 72°F to 79°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!