Patmos, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Patmos is known for its religious significance, particularly as the location where Saint John is said to have written the Book of Revelation. The best time to travel to Patmos, Greece, is from May to September, with average air temperatures around 25°C (77°F) and water temperatures around 23°C (73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!