Frejus, France offers 32 beaches perfect for sunbathing, surfing, swimming, and more. Frejus is known for its ancient Roman ruins, including the Frejus Amphitheatre and the Aqueduct. The best time to travel to Frejus, France, is from May to September, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!