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Nature & Outdoors Guide

Maine Islands Guide

From car-free escapes to working fishing communities, Maine's islands offer experiences unavailable on the mainland. Your guide to island adventures.

Maine has over 4,600 islands, more than any other Atlantic coast state. Most are uninhabited, privately owned, or protected wildlife refuges. But dozens welcome visitors, each with its own character: artist colonies, fishing communities, wilderness preserves, and summer retreats. The ferry ride builds anticipation. The island delivers escape.

This guide covers accessible Maine islands, from quick day trips to longer explorations.

Casco Bay Islands

Portland’s backyard islands offer easy access to island life.

Peaks Island

The basics: 20 minutes by ferry from Portland; population 800 year-round Best for: Day trips, easy island experience, families Season: Year-round ferry service

Getting there: Casco Bay Lines from Portland’s Old Port (frequent departures)

What to do:

  • Rent a bike or golf cart and circle the island
  • Beach at Sandy Point or Centennial Beach
  • Explore Battery Steele (WWII fortification)
  • Lunch at the Cockeyed Gull or Inn on Peaks
  • Browse shops in the village center

Time needed: Half day to full day

Tip: The “down the bay” ferry ride takes longer but shows more islands.

Chebeague Island

The basics: 45 minutes by ferry; population 350 year-round Best for: Quiet escape, cycling, authentic island life Season: Year-round service from Cousins Island; summer service from Portland

Getting there: Chebeague Transportation Company from Cousins Island (faster) or Casco Bay Lines from Portland (longer, scenic)

What to do:

  • Bike the quiet roads
  • Walk the sandy beaches
  • Explore the island’s historic hotel ruins
  • Have lunch at the Slow Bell Café
  • Experience genuine island pace

Time needed: Full day

Long Island

The basics: 50 minutes by ferry; population 200 year-round Best for: Quiet day trip, nature walks Season: Year-round service

Getting there: Casco Bay Lines from Portland

What to do:

  • Walk the length of the island
  • Beach time at Singing Beach
  • Picnic lunch (limited services)
  • Experience real island quiet

Great Diamond Island

The basics: 20 minutes by ferry; population varies seasonally Best for: History buffs, easy escape Season: Year-round service

What to do:

  • Explore Fort McKinley (former military post)
  • Walk the Diamond Cove community
  • Beach access
  • Limited but interesting dining

Midcoast Islands

Monhegan Island

The basics: 12 miles offshore; population 60 year-round Best for: Artists, hikers, nature lovers, true escape Season: Year-round ferry (limited winter schedule)

Getting there:

  • Monhegan Boat Line from Port Clyde (1 hour)
  • Hardy Boat from New Harbor (1 hour)
  • Balmy Days from Boothbay Harbor (1.5 hours)

What to do:

  • Hike the dramatic Whitehead and Blackhead cliffs
  • Visit artist studios (summer)
  • Explore Cathedral Woods
  • Watch for seals and seabirds
  • Unplug completely (limited electricity, no cars)

Lodging:

  • The Island Inn
  • The Trailing Yew
  • Monhegan House
  • Several cottage rentals

Time needed: Day trip possible; overnight recommended

Tips:

  • Book ferries in advance (July-August especially)
  • Bring everything you need (limited supplies on island)
  • Wear sturdy shoes for cliff trails
  • Pack layers (island weather is unpredictable)

Vinalhaven

The basics: 15 miles offshore; population 1,200 year-round Best for: Working fishing community experience, swimming, hiking Season: Year-round ferry service

Getting there: Maine State Ferry from Rockland (1 hour 15 minutes)

What to do:

  • Swim at the quarries (Booth, Lawson, Armbrust Hill)
  • Hike Lane’s Island Preserve
  • Explore Carver’s Harbor village
  • Buy lobster directly from fishermen
  • Cycle the island roads

Lodging:

  • Tidewater Motel
  • The Haven
  • Various rentals

Time needed: Full day minimum; overnight better

Tips:

  • Car reservations fill up; walk on and rent bikes
  • Quarry swimming is spectacular
  • Lane’s Island is free and beautiful

North Haven

The basics: 12 miles offshore; population 350 year-round Best for: Quiet sophistication, sailing, cycling Season: Year-round ferry service

Getting there: Maine State Ferry from Rockland (12.5 miles, 1 hour 10 minutes)

What to do:

  • Cycle the island roads
  • Visit Nebo Lodge for dinner
  • Explore the quiet village
  • Sail or kayak the protected waters

Character: More refined than neighboring Vinalhaven; popular with sailors and old-money summer families.

Islesboro

The basics: 3 miles offshore; population 600 year-round Best for: Quiet driving tour, summer estate architecture Season: Year-round ferry service

Getting there: Maine State Ferry from Lincolnville Beach (20 minutes)

What to do:

  • Drive the length of the island
  • Visit the Sailor’s Memorial Museum
  • Beach at Pendleton Point
  • Appreciate the summer “cottages” (mansions)
  • Lunch at the Dark Harbor Shop

Tips: Bring your car; the island is 14 miles long.

Penobscot Bay Islands

Isle au Haut

The basics: 6 miles offshore; partially in Acadia National Park Best for: Hikers, wilderness seekers, true solitude Season: Ferry runs April-November

Getting there: Isle au Haut Boat Company from Stonington (45 minutes)

What to do:

  • Hike the Acadia National Park trails
  • Camp at Duck Harbor (advance reservation required)
  • Experience wild Maine coastline
  • See almost no other people

Lodging:

  • The Keeper’s House (former lighthouse keeper’s quarters)
  • Duck Harbor Campground (primitive, in the park)

Time needed: Full day minimum; camping extends the experience

Tips:

  • Reservations required for camping (opens early spring)
  • Bring everything you need
  • This is real wilderness, be prepared

Deer Isle and Stonington

The basics: Connected to mainland by bridge Best for: Art galleries, fishing village character, Acadia access Season: Year-round

Getting there: Drive via Route 15 from Blue Hill

What to do:

  • Gallery hopping in Deer Isle village
  • Haystack Mountain School of Crafts
  • Stonington fishing village
  • Lobster at Aragosta
  • Ferry to Isle au Haut

Character: Island feel without the ferry logistics. Active fishing community mixed with artists and writers.

Downeast Islands

Campobello Island (Canada)

The basics: Canadian island in New Brunswick, reached by bridge from Lubec, Maine Best for: Roosevelt history, birding, coastal trails Season: The island and the park grounds and Natural Area are open year round, but the historic buildings are not. They close for the 2026 season on Saturday 17 October

Getting there: Bridge from Lubec (no toll)

Set your watch forward. Campobello is on Atlantic Time, one hour ahead of Maine. The park gives its building hours as 10am to 6pm Atlantic, which is 9am to 5pm Eastern, so arriving from Lubec at what feels like 5pm means the cottage has just closed.

What to do:

  • Tour the Roosevelts’ preserved 34-room summer cottage, an indoor museum. Admission to the park and the cottage is free
  • Hike the park’s 11 trails and the forest carriage drives
  • Walk the Natural Area, open year round even when the buildings are shut

Note: This is a real international border crossing, not a novelty. Bring a passport or passport card for every member of the party, including children, and expect to clear customs in both directions.

Machias Seal Island

The basics: Remote island 10 miles offshore Best for: Puffins, seabirds, birding adventure Season: Summer only, weather dependent. Tours for the 2026 season have concluded; the operator says the 2027 dates and reservation opening will be announced in January

Getting there: Bold Coast Charter Company from Cutler Harbor, which calls this the largest puffin colony on the Maine coast

What to do:

  • Atlantic puffin viewing, the largest puffin colony on the Maine coast in the operator’s own words
  • Razorbill colonies
  • Arctic tern nesting areas
  • Serious seabird photography

Tips:

  • Reservations open in January for that summer, and landings are capped, so book as early as you can
  • Be prepared for rough water
  • Island landing not guaranteed (weather dependent)
  • This is bucket-list birding

Day Trip Islands

From Portland

Peaks Island: 20 minutes, frequent ferries, easy day trip Chebeague Island: 45-60 minutes, full day recommended Great Diamond Island: 20 minutes, quick escape

From Rockland

Vinalhaven: 75 minutes each way; possible day trip North Haven: 60 minutes; day trip possible Matinicus: 2+ hours; requires planning

From Bar Harbor

Baker Island: Cruise includes naturalist (half day) Cranberry Isles: Short ferry from Northeast Harbor

Overnight Islands

Easy Overnight

Peaks Island: Inn on Peaks Island Vinalhaven: Tidewater Motel, The Haven Islesboro: Dark Harbor House (seasonal)

Adventure Overnight

Monhegan: Multiple options Isle au Haut: Keeper’s House, camping Matinicus: Very limited (plan carefully)

Island Etiquette

General principles:

  • Respect private property
  • Stay on trails and public areas
  • Leave no trace
  • Support local businesses
  • Keep dogs leashed where required

On working islands:

  • Fishing comes first. Don’t block access
  • Quiet hours matter to year-round residents
  • Island infrastructure is limited, be patient

Practical Matters

Ferries

Maine State Ferry Service

  • Serves Vinalhaven, North Haven, Islesboro, Swans Island, Frenchboro
  • Car reservations recommended (essential for popular routes)
  • Walk-on passengers rarely turned away

Casco Bay Lines

  • Serves Casco Bay islands from Portland
  • Frequent service to nearby islands
  • Bikes allowed

Private Operators

  • Monhegan: Multiple operators from different ports
  • Isle au Haut: Isle au Haut Boat Company
  • Machias Seal Island: Bold Coast Charter Company

What to Bring

  • Cash (many islands are cash-preferred)
  • Food and water (limited island services)
  • Layers (island weather differs from mainland)
  • Rain gear
  • Sturdy walking shoes
  • Sunscreen
  • Binoculars (wildlife)
  • Patience (island time is different)

Best Times

  • June: Long days, fewer crowds
  • July-August: Peak season, most services available
  • September: Excellent weather, crowds thin
  • Off-season: Fewer services but authentic experience

The Island Experience

Islands change people. The ferry ride serves as decompression chamber, releasing mainland stress mile by mile. By the time you step onto the dock, you’ve left something behind. By the time you leave, you’ve found something different.

Each island has its own personality. Monhegan attracts artists and hermits. Vinalhaven works for a living. North Haven summers in quiet elegance. Isle au Haut offers wilderness within reach. The choice of island is the choice of experience.

What they share is separation, from cars (mostly), from convenience, from the pace that governs mainland life. On an island, you walk. You wait. You adjust to a different rhythm. And in that adjustment, something opens.

From Peaks Island’s easy accessibility to Isle au Haut’s genuine wilderness, Maine’s islands offer escape at every level of adventure. The ferry ride is the price of admission to a different world, one where the mainland fades, the pace slows, and the essential Maine coast reveals itself without distraction.

Explore more island adventures and coastal Maine: