Finley Point, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Finley Point, Montana, United States, is known for its proximity to Flathead Lake and the Finley Point State Park. The best time to travel to Finley Point, United States, is during the summer months of June to August, when the average air temperature is around 75°F (24°C) and the water temperature in Flathead Lake is approximately 65°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!