Groix, France offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Groix is known for its beautiful beaches, the Port Tudy harbor, and the Ecomusee de l'Ile de Groix. The best time to travel to Groix, France, is from June to September, when the average air temperature is around 18-22°C (64-72°F) and the water temperature is approximately 17-20°C (63-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!