The Boston Harbor Islands have a humid maritime climate characterized by slightly cooler temperatures than the mainland, so dress in layers. Typical summer conditions feature air temperatures approximately 5-10 degrees cooler than the mainland between 60-80 Fahrenheit, winds of 0-15 knots and waves of 1-3 feet.
Fees and Reservations Vary - $0.00
Boston Harbor Islands is a Partnership park; fees and reservations vary. The park does not charge an admission fee, but a transportation fee applies for the public ferry. Reservations are recommended. Please note that National Park Land Passes do not cover transportation fees. Visit bostonharborislands.org to plan your trip.