There are over 4,600 islands off the Maine coast. Some are more remote than others. In winter, all are a little quieter.
Some islands are actually accessible by road including two off the coast of Yarmouth: Cousins and Littlejohn Islands. Littlejohn Island has a preserve that includes a hiking trail with scenic views of Casco Bay.
We actually hiked the trail a few days into spring so the snow cover was spotty but the wind chill was intense making it feel like we were still in winter. We hiked late on a Sunday afternoon which probably impacted the cooler temperatures.