Sisi, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sisi, Crete, Greece, is known for its picturesque harbor and proximity to the archaeological site of Malia. The best time to travel to Sisi, Greece, is from May to October, with average air temperatures ranging from 70-85°F (21-29°C) and water temperatures around 72-79°F (22-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!