Summers (June-September) are generally warm and humid; wear comfortable sportswear and walking shoes. Biting insects (flies, mosquitoes, and ticks)abound in season particularly in wooded and grassy field areas. Late fall and winter months (October-April) are usually cool and wet.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.