The best time to visit Port Sanilac is during the summer months, from June to August, when the weather is warm and conducive to outdoor activities.During this period, the average daily temperatures range from the mid-60s to the low 80s Fahrenheit, making it ideal for enjoying Lake Huron's beaches and water sports. The Port Sanilac Lighthouse, a prominent landmark, is often open for tours, and the harbor is bustling with boats. This is an excellent time for families looking for a classic lakeside vacation with opportunities for swimming, fishing, and exploring the small town.Early autumn, specifically September, also offers a pleasant experience for couples. The weather remains mild, with fewer crowds, and the changing fall foliage along the scenic drives provides a beautiful backdrop.