Saint Malo, France offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Saint Malo is known for its historic walled city, the Intra-Muros, and its connection to the famous privateer Jacques Cartier. The best time to travel to Saint Malo, France, is from June to September, when the average air temperature is around 60-70°F (15-21°C) and the water temperature is approximately 60-64°F (16-18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!