Matinicus Isle Plantation, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Matinicus Isle Plantation is known for its remote and picturesque setting, offering a unique glimpse into traditional Maine island life. The best time to visit Matinicus Isle Plantation is during the summer months of June to August, when the average air temperature is around 65-75°F and the water temperature is approximately 55-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!