Trebeurden, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Trebeurden is known for its Pink Granite Coast and the Ile Milliau. The best time to travel to Trebeurden, France, is from June to September, with average air temperatures around 60-70°F (15-21°C) and water temperatures around 60-65°F (15-18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!