Miller Place, United States offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Miller Place is known for its historic district featuring the Miller Place Historic District and the picturesque Long Island Sound beaches. The best time to travel to Miller Place, United States, is during late spring to early fall (May to September) when the average air temperature ranges from 60-80°F and the water temperature is around 60-70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!