Greenville, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Greenville, Michigan, United States, is known for the historic Fighting Falcon Military Museum. The best time to travel to Greenville, United States, is in the spring (April to June) when the average air temperature is around 60-75°F (16-24°C) and water temperatures in nearby lakes are about 60-70°F (16-21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!