Saint Quentin en Tourmont, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Saint Quentin en Tourmont is known for the Parc du Marquenterre, a renowned birdwatching destination. The best time to travel to Saint Quentin en Tourmont, 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 16-20°C (61-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!