The best time to visit Grand Marais is during the summer months, from June to August, or in autumn, particularly September and early October.Summer offers the warmest weather, with average temperatures in the low to mid-20s Celsius, making it ideal for outdoor activities like hiking, kayaking, and fishing on Lake Superior. The town is bustling during this period, with local shops and restaurants fully open, and events like the Grand Marais Arts Festival often take place.For those who appreciate stunning natural beauty and cooler temperatures, autumn is an excellent choice. The surrounding forests, especially along the scenic Gunflint Trail, transform into a spectacular display of red, orange, and gold foliage.