Keene, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Keene is known for the annual Keene Pumpkin Festival, which once held the world record for the most lit jack-o'-lanterns in one place. The best time to travel to Keene, United States, is in late spring (May to June) when the average air temperature is around 60-70°F, and water temperatures in nearby lakes are typically around 50-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!