Seawall Campground
Acadia National Park — lakeside
Location: Southwest Harbor, ME, ME
Price: From $22 per night
Price range: $22–$60 per night
Rating: 4.5 out of 5 (872 reviews)
Season: May through October
For Seawall campsites, 90 percent of campsites are released six months in advance on the first of each month at 10 am EST. The remaining 10 percent are released at 10 am 14 days ahead of a desired arrival date on a rolling basis. For example, if you plan to arrive on May 24, you can make an online reservation starting at 10 am EST Dec 1 from the first release or starting at 10 am EST on May 10 from the second release.
Cell coverage (FCC estimate): moderate signal. Actual signal may vary in remote areas. Best carrier: Verizon. Verizon 4G: 100%. AT&T 4G: 100%. T-Mobile 4G: 0%.
Amenities: Fire Rings, Picnic Tables, Flush Toilets, Showers, Dump Station
Availability alerts: Set a free cancellation alert at camperwatch.org/campground/seawall-campground to be notified when sites open up.
Federal campground in Acadia with well-maintained facilities and helpful rangers. Google reviews average 4.6/5 stars, with campers praising cleanliness, privacy from tree coverage, and spacious sites.
Wildlife alert: North American River Otter, White-tailed Deer, Atlantic Puffin, Iceland Gull, Black Guillemot, Smooth Greensnake, and Eastern Milksnake documented within 8km.
Insider tips for Seawall Campground: Book 6 months in advance on the 1st of the month at 10am EST for 90% of sites Reserve remaining 10% of sites 14 days ahead at 10am EST on recreation.gov Plan for 20-40 minute drive to main Acadia attractions from this location
Skip Seawall Campground if: You need RV hookups - no hookups available, only suitable for self-contained RVs. You require year-round camping - seasonal operations only May-October. You want to camp during peak season without advance planning - federal campground requires early booking.
Best time to visit Seawall Campground: May-October — Campground operates seasonally from May through October only.
Nearby campgrounds: Blackwoods Campground — Acadia National Park (Bar Harbor, ME), Schoodic Woods Campground (Winter Harbor, ME), Duck Harbor Campground (Bar Harbor, ME).
Cell Phone Coverage at Seawall Campground
Cell signal at Seawall Campground (Southwest Harbor, ME): moderate overall signal based on FCC broadband data. Best carrier: Verizon.
- Verizon 4G LTE: 100% coverage
- AT&T 4G LTE: 100% coverage
Coverage data source: FCC Broadband Data Collection (BDC). Actual signal may vary due to terrain, tree cover, and distance from towers. Camper reports are more reliable than coverage maps in remote areas.
For Seawall campsites, 90 percent of campsites are released six months in advance on the first of each month at 10 am EST. The remaining 10 percent are released at 10 am 14 days ahead of a desired arrival date on a rolling basis. For example, if you plan to arrive on May 24, you can make an online reservation starting at 10 am EST Dec 1 from the first release or starting at 10 am EST on May 10 from the second release.
Verified facts
RIDB / Recreation.gov official databaseAmenities
RIDB /facilities /campsites · owner-verifiedStraight talk
CamperWatch intel · curated from camper reportsKnown issues, each with the workaround. Read before you book.
Insider tips & when to go
CamperWatch intel · hand-curated entryBook 6 months in advance on the 1st of the month at 10am EST for 90% of sites
Reserve remaining 10% of sites 14 days ahead at 10am EST on recreation.gov
Plan for 20-40 minute drive to main Acadia attractions from this location
Campground operates seasonally from May through October only
Things to do nearby
RIDB /activities /recareas + intelConditions today
LiveCell signal
FCC BDC · quarterly datasetFCC maps are theoretical — camper reports confirm signal. Best carrier: Verizon.
Wildlife nearby
iNaturalist · research-grade · 8 kmLocation
Leaflet · OpenStreetMap tiles
Getting there →
From Boston, take I-95 north to Augusta, Maine, then Route 3 east to Ellsworth and on to Mount Desert Island. For an alternate route, continue on I-95 north to Bangor, Maine, then take Route 1A east to Ellsworth. In Ellsworth, take Route 3 to Mount Desert Island. At first traffic light on Mount Desert Island, bear right onto Route 102. Stay on 102 for approximately 11.5 miles. You will pass through Somesville and the town of Southwest Harbor. As you leave Southwest Harbor, keep right on Route 10
Campground entrance
Google Maps APICommunity
#community · posts, photos & Q&A · AI-moderated (Claude Vision)Pro tips
- Book on recreation.gov exactly 6 months ahead at 10am ET — Acadia National Park fills fast in peak season.
- Check current road conditions at Acadia National Park before arrival — seasonal closures common.
Frequently asked questions
RIDB facts + intel · FAQPage schema, speakableHow much does Seawall Campground cost per night?+
What season is Seawall Campground open?+
Does Seawall Campground have hookups?+
What is the maximum RV length at Seawall Campground?+
How do I make reservations at Seawall Campground?+
What is the cell service like at Seawall Campground?+
What season is Seawall Campground open, and what are check-in times?+
Official resources
●Data sources on this page
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