Bar Harbor has 44 indoor and weather-flexible activities — more than most people expect from a coastal outdoor town. If rain hits mid-trip, you're not stuck in the hotel. Between the museums, the aquarium theater, the arcade, the art studio, and enough restaurants to linger in for hours, a rainy day here can turn into one of the better days of the trip.
Best Indoor Museums and Cultural Spots
Diver Ed's Dive-In Theatre tops the list. A diver goes underwater with a live camera and broadcasts what they're seeing directly to the boat — sea urchins, lobsters, starfish, and whatever else is down there. USD 80–120 for a family of four, roughly 2 hours. It's completely weather-independent (you're on a boat at the dock) and it's the most genuinely different activity in Bar Harbor.
George B. Dorr Museum of Natural History on the College of the Atlantic campus covers Maine's coastal natural history with real specimens and fossils. USD 20–30 for a family. Focused and substantive — not a kids-museum version of natural history.
Great Harbor Maritime Museum has the maritime history of Bar Harbor: models, maps, historical photos, and artifacts from the town's seafaring past. USD 15 for a family. Small enough to do in 45–60 minutes without rushing.
Wendell Gilley Museum is dedicated to Maine's master bird carver. USD 20 for a family. Kids who aren't expecting to be impressed by carved wooden birds often come out genuinely curious about the craft.
ArtWaves runs hands-on art workshops inspired by the Maine coast. USD 60 for a family, 1–2 hours. Register in advance — popular sessions fill up, and showing up on a rainy day without a reservation is a gamble.
Oceanarium and Education Center covers Maine's marine environment with live tanks and hands-on exhibits. USD 50 for a family. Both indoor and outdoor elements — the outdoor parts can work in light rain.
Children's Discovery Museum — USD 30 for a family. Hands-on exhibits designed for kids through early elementary school. Good for families with younger children.
Maine Discovery Museum — USD 50 for a family. Interactive science and arts exhibits. Indoor, good for a couple of hours.
Barn Arts hosts arts programming and performances in Bar Harbor. USD 40–80 for a family depending on what's scheduled. Check their calendar before going.
Sieur de Monts Nature Center has covered exhibit space even in the rain. USD 35 (included in Acadia vehicle pass). The nature center building itself is indoor and useful regardless of weather.
Entertainment Venues
Orono Arcade LLC — USD 40–80 for a family. Classic arcade. Good for burning 1–2 hours when outdoor plans fall through.
Sammi's Family Entertainment Center — USD 60–120 for a family. Multi-activity entertainment center with go-karts, mini-golf, and arcade games. Some elements are outdoor but there's enough covered to be worthwhile.
1932 Criterion Theatre — USD 40–80 for a family. A historic movie theater in downtown Bar Harbor. Check showtimes — a matinee on a rainy afternoon is exactly what this building was built for.
Acadia Repertory Theatre — USD 60–100 for a family. Live summer theater in Somesville. Professional productions with occasional family-friendly shows. Check their season calendar.
Reel Pizza Cinerama — USD 60–100 for a family (tickets plus pizza). A movie theater where you eat pizza at your seat. It's the kind of place that kids think is amazing and that genuinely is a good time on a gray afternoon.
Western Maine Play Museum — USD 25 for a family. Interactive play museum well-suited to toddlers through early elementary. Not just for little kids — older siblings find things to do too.
Restaurants Worth Lingering At
Harbor Table — USD 70 for a family. Sit-down dining with harbor views. Relaxed enough for families, quality food. This is the kind of place where you can easily spend two hours on a rainy afternoon without feeling rushed out.
Jeannie's Great Maine Breakfast — USD 45 for a family. A Bar Harbor institution for breakfast. Long waits on busy days, but worth it. Go mid-morning on a rainy day when the outdoor crowd has already given up.
Peekytoe Provisions — USD 50 for a family. A good quality sit-down option that won't feel rushed. Named after the Maine peekytoe crab.
Stewman's Lobster Pound - Holiday Inn Resort Bar Harbor — USD 90 for a family. The classic Maine lobster pound experience. More practical on a rainy day than a beach picnic format.
Free or Low-Cost Indoor Options
Kids' Corner — Free. A dedicated kids' space in Bar Harbor. Good rest stop for little ones.
Island of Imagination Early Learning Center — Free. Check availability — this is a community resource that's occasionally open to visitors.
Bar Harbor Chamber of Commerce — Free. Warm, dry, and stocked with local event info. Good first stop on a rainy day to find out what's happening.
Schoodic Arts for All — USD 0–60 (programming-dependent). Free galleries and rotating low-cost workshops. Check their calendar.
Sherman's Maine Coast Book Shop Bar Harbor — Free to browse (USD 20–60 purchases). One of Maine's best independent bookshops. Rain makes it better.
Bull Moose — Free to browse. Music, books, movies. Good for older kids and teens.
In the Woods — USD 20–80 (purchases). Maine-focused gift and home goods shop. Warm and browsable.
Ellsworth YMCA — USD 20–40 for day passes. Swimming pool, gym, and facilities in nearby Ellsworth (20 minutes from Bar Harbor). When you need to let kids burn energy in a controlled environment, this works.
The Mount Desert Island YMCA — USD 40 for a family. Closer to Bar Harbor, with pool and fitness facilities.
Quick Picks by Age Group
Toddlers (under 4): - Western Maine Play Museum — USD 25, 1.5–2.5 hours - Children's Discovery Museum — USD 30 - Kids' Corner — Free - Jeannie's Great Maine Breakfast — USD 45 (toddlers love breakfast food, and the wait is worth it)
Big Kids (6–12): - Diver Ed's Dive-In Theatre — USD 80–120 - Orono Arcade LLC — USD 40–80 - Reel Pizza Cinerama — USD 60–100 - ArtWaves — USD 60
Teens: - Acadia Repertory Theatre — USD 60–100 - 1932 Criterion Theatre — USD 40–80 - Barn Arts — USD 40–80 - George B. Dorr Museum of Natural History — USD 20–30
Bottom Line
A rainy day in Bar Harbor doesn't have to derail the trip. Diver Ed's Dive-In Theatre is the standout — it's completely weather-independent and genuinely different from anything else. Back that up with a lunch at Reel Pizza Cinerama or a long breakfast at Jeannie's and you've got a full, good day without a single puddle-walk required.