Frenchboro, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Frenchboro, Maine, United States, is known for its picturesque coastal scenery and traditional lobster fishing village experience. The best time to travel to Frenchboro, United States, is in July when the average air temperature is around 70°F (21°C) and the water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!