I lived in New England most of my life. I have to agree with the others that mid to late September would be the best. The further north you go the more color you will see. Bring some warm clothes as the weather is beginning to turn going into winter. Have a wonderful cruise and enjoy the beautiful New England Scenery.
“Twenty years from now you will be more disappointed by the things that you didn’t do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.“