New Rochelle, United States offers 9 beaches perfect for sunbathing, surfing, swimming, and more. New Rochelle is known for Glen Island Park and the Thomas Paine Cottage Museum. The best time to travel to New Rochelle, United States, is during late spring to early fall (May to September) when the average air temperature ranges from 60°F to 80°F, and the water temperature in nearby Long Island Sound is around 60°F to 75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!