Westminster, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Westminster, Massachusetts, United States, is known for its scenic Wachusett Mountain State Reservation, which offers hiking, skiing, and panoramic views. The best time to travel to Westminster, United States, is in late spring or early fall when the average air temperature is around 70°F and water temperature is not a significant factor as it is not a coastal city. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!