A month-by-month look at the festivals, concerts, races, and community events that bring Mount Desert Island to life throughout the year.
January – February: Winter Calm & Community Warmth
- Winter Farmers' Markets (Bar Harbor, Southwest Harbor) — Local farms and artisans sell winter produce, baked goods, and handmade crafts
- Island Arts Association Winter Show (Bar Harbor) — Indoor display of local artists' work
- Acadia Winter Trails Weekend (late February) — Guided snowshoeing and cross-country skiing in Acadia National Park (weather dependent)
March – April: Early Spring Revival
- Seal Harbor & Northeast Harbor Art Walks (occasional weekends) — Early-season exhibits and open studios
- Bar Harbor Winter Beer & Food Fest (late March) — Craft brewers and chefs celebrate Maine-made drinks and dishes
- Earth Day in Acadia (April 22) — Volunteer cleanup events and nature walks hosted by Friends of Acadia
May: Welcome Back to Acadia
- Acadia Birding Festival (May 28 – June 1, 2026) — Maine's biggest birding event
- MDI Memorial Day Weekend Observances (May 23–25) — Parades, remembrance ceremonies, and seasonal openings across MDI towns
- Spring Craft Fair (Southwest Harbor) — Jewelry, pottery, and local foods
June: Music and Maritime Spirit
- Bar Harbor Music Festival (June 28 – July 27, 2026) — Classical, jazz, and opera in intimate venues
- Acadia Pride Celebration (mid-June, Bar Harbor) — LGBTQ+ community event with parade, music, and art installations
- Northeast Harbor Fleet Launch & Waterfront Opening — Traditional boat launching day marking the start of sailing season
July: High Summer Celebrations
- Fourth of July in Bar Harbor (July 4, 2026) — Parade, lobster festival, and fireworks over Frenchman Bay
- Mount Desert Garden Club Annual Tour (mid-July) — Tours of private gardens and estates around MDI
- Harbor House Flamingo Festival (Southwest Harbor, mid-July) — Quirky family-friendly parade, lobster dinner, games, and live music
- Art in the Park (Bar Harbor Village Green, late July) — Juried fine arts show
August: Art, Food & Stars
- Island Arts Association Summer Craft Fair (early- to mid-August) — Showcases local jewelry, paintings, textiles, and woodcrafts
- Acadia Night Sky Festival (August 27–31, 2026) — Stargazing, telescope sessions, and astronomy presentations under MDI's pristine dark skies
- Blueberry Festivals (throughout August) — Local berries featured in pies, jams, and pancakes at community fairs
September: Late-Summer Harvest & Heritage
- Southwest Harbor's "Fleet Is In" Harbor Celebration (early September) — Boat parade, live bands, and seafood picnic
- Acadia Half Marathon & Fall Run (mid-September) — Scenic course around the park loop
- MDI Garlic & Beer Festival (Ellsworth/MDI area, late September) — Maine breweries meet local farms and musicians
October: Color and Community
- MDI Marathon, Half Marathon & Relay (October 11, 2026) — One of the most picturesque marathons in the U.S.
- Acadia's Oktoberfest (Southwest Harbor, October 3–4, 2026) — Craft beer, live music, and local foods
- Southwest Harbor/Tremont Craft Fair (mid-October) — Local artisans and fall décor market
- Acadia National Park Fall Foliage Weeks (throughout October) — Ranger-led foliage walks and photography events
November – December: Quiet Season & Holiday Charm
- Thanksgiving Community Luncheons (Bar Harbor & Southwest Harbor) — Local churches host free or donation-based community meals
- Early Bird Pajama Sales (Bar Harbor, mid-November) — Local shops open at dawn for pre-holiday deals and hot cocoa
- Christmas in Bar Harbor & Southwest Harbor Tree Lighting (early December) — Caroling, cocoa, and Santa visits
- Maine Seacoast Christmas Festival (Northeast Harbor) — Boat parade with decorated harbor vessels
- Winter Solstice Walk (Acadia National Park, December 21, 2026) — Guided reflection walk celebrating the return of longer days
