The best time to visit Granville is during the late spring, from May to June, or early autumn, in September.These months offer pleasant weather, with fewer crowds than the peak summer season, allowing for a more relaxed experience. You'll find temperatures are mild enough for exploring the town and enjoying the coast without the intense heat or the chill of winter.For those who enjoy coastal walks and outdoor activities, May and June are particularly lovely. The gardens, including the famous Christian Dior Garden, are in full bloom, and the longer daylight hours provide ample opportunity to explore the high town and the marina.September is also an excellent choice, especially for couples. The sea remains warm enough for swimming early in the month, and the atmosphere in town is generally more subdued after the summer rush.