Do you know what the best time of the year is to go out to the Dunes to walk the trails and take photographs? ANY time of the year is the BEST time of the year to be outside enjoying nature. Spring, Summer, Autumn and Winter. It just does not matter, they are all awesome. Late October is one of my 12 favorite months to go out. Here along the shore of Lake Michigan we typically get very mild and pleasant weather in October.