What's on in Acadia National Park, United States through the year

Busy — Winter / Christmas break in United States, school holidays in 2 of the markets that fill it

Nothing new starts in January.

Still on: Park Loop Road winter closure (1 Dec – 14 Apr)

Quiet — one of its worst months for weather

Nothing new starts in February.

Still on: Park Loop Road winter closure (1 Dec – 14 Apr)

Busy — Spring break in United States

• Closure

  Peregrine cliff trail closures

  15 Mar – 15 Aug · usually

  The Precipice, Jordan Cliffs and Valley Cove trails shut while peregrines nest on the cliffs above them, usually from mid-March until the chicks fledge. Rangers set up scopes at the Precipice lot instead. Source ↗

Still on: Park Loop Road winter closure (1 Dec – 14 Apr)

Shoulder season — an ordinary month

Nothing new starts in April.

Still on: Peregrine cliff trail closures (15 Mar – 15 Aug (usually)), Park Loop Road winter closure (1 Dec – 14 Apr)

Shoulder season — an ordinary month

• Rule

  Cadillac Summit Road reservation

  20 May – 25 Oct · usuallyBook early

  Driving up for sunrise needs a timed vehicle reservation from late May to late October. Thirty per cent are released ninety days out and the rest two days ahead at 10am Eastern; the sunrise slots go in seconds. Source ↗

• Season

  Sea fog

  20 May – 20 Aug · usuallyFog seasonRisk

  Warm air over a cold Gulf of Maine puts fog on the coast for a good share of early-summer mornings. Sunrise from Cadillac can be a white wall, and it usually burns back by late morning. Source ↗

Still on: Peregrine cliff trail closures (15 Mar – 15 Aug (usually))

Busy — Summer break in United States, school holidays in 2 of the markets that fill it

Nothing new starts in June.

Still on: Peregrine cliff trail closures (15 Mar – 15 Aug (usually)), Cadillac Summit Road reservation (20 May – 25 Oct (usually)), Sea fog (20 May – 20 Aug (usually))

Peak crowds — Peak summer season, Summer break in United States

• Season

  Peak summer season

  1 Jul – 31 AugSchool holidaysCrowdedBook early

  July and August carry most of the year's visitors. Parking at Sand Beach and Jordan Pond is gone by nine in the morning, and the free Island Explorer buses are the only sane way around the island.

Still on: Peregrine cliff trail closures (15 Mar – 15 Aug (usually)), Cadillac Summit Road reservation (20 May – 25 Oct (usually)), Sea fog (20 May – 20 Aug (usually))

Peak crowds — Peak summer season, Summer break in United States

• Festival

  Acadia Night Sky Festival

  27–31 AugMajor festivalBook early

  Several nights of star parties, telescope sessions and talks over one of the darkest skies left on the eastern seaboard. The headline events on Cadillac and at Sand Beach book out first. Source ↗

Still on: Peregrine cliff trail closures (15 Mar – 15 Aug (usually)), Cadillac Summit Road reservation (20 May – 25 Oct (usually)), Sea fog (20 May – 20 Aug (usually)), Peak summer season (1 Jul – 31 Aug)

Peak crowds — Fall foliage, Summer break in United States

• Nature

  Fall foliage

  28 Sep – 25 Oct · usuallyAutumn colourCrowded

  The island turns through the first half of October, a week or so behind inland Maine because the ocean holds the warmth. Columbus Day weekend is the single busiest weekend of the year here.

Still on: Cadillac Summit Road reservation (20 May – 25 Oct (usually)), Acadia Night Sky Festival (27–31 Aug)

Busy — Fall foliage

Nothing new starts in October.

Still on: Cadillac Summit Road reservation (20 May – 25 Oct (usually)), Fall foliage (28 Sep – 25 Oct (usually))

Busy — Thanksgiving break in United States

Nothing new starts in November.

Quiet — travelers describe it as quiet, Winter / Christmas break in United States

• Closure

  Park Loop Road winter closure

  1 Dec – 14 Apr

  Most of the loop shuts to cars from the start of December until mid-April, and the Cadillac summit road goes with it. What is left is a park you have to ski, snowshoe or walk into, and almost nobody does. Source ↗