When
When to see the Fall foliage
Peak window: first week of October to third week of October.
This year
Exact dates and any day-use reservation rules shift year to year, and it's never guaranteed on a given evening. Confirm the current year's rules and road conditions on the official park page before you build a trip around it.
Where to watch
Finding the Fall foliage
The Park Loop Road, the Ocean Path between Sand Beach and Otter Cliff, and the Cadillac Summit Road carry the heaviest color along Mount Desert Island's east side; the carriage-road network around Jordan Pond and Eagle Lake threads color under cover; the Schoodic Peninsula's quieter loop reads later in the window. Color holds longest at lower elevations near the coast — Cadillac and the higher granite ridges turn first and clear first.
What makes it happen: Mount Desert Island runs about a week or two behind inland Maine because the ocean moderates the cool-down. Sugar maples and red maples turn first, joined by birch and beech as the window deepens; oaks hold the latest reds into the final week. The peak shifts year to year with the run of cool nights and bright days through September, but it consistently lands in mid-October.
Plan around it
How to time your visit
Build the trip around the second week of October if you have to pick a date months out — the window is broad enough that you'll catch color either side, and you avoid the gamble of the leading or trailing edge. Cadillac Summit Road vehicle reservations stay in force through mid-October, so book one for sunrise or daytime the morning Recreation.gov releases them. The Island Explorer shuttle drops to a reduced fall schedule in mid-August and ends in mid-October (October 12 in 2026), so plan your last shuttle day around that; after the shuttle stops, the Park Loop one-way drive carries the load. Bar Harbor lodging is the limiting factor — foliage weekends fill months ahead, so book early or aim for a weekday.
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