Openings · last 7 days
0
01 · Detected Opening History · the openings record · file CS-234674
When Seawall Campground reopens
Seawall Campground's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
77
Openings · last 90 days
899
Weekday pattern
Detected openings by day of week · 90dNo strong weekday pattern is evident in the openings Campsite Sniper has detected: 899 openings spread across the week.
Hour-of-day pattern
First detected by hour · local time · last 90 daysThe largest concentrations of detected openings were first detected during the 08:00 and 09:00 local-time hours. Those hours contained 274 of 899 detected openings (30.5%). Hours show when Campsite Sniper first detected each opening, in Eastern Time, not when the change was made upstream.
Lead-time profile
Days before stay date · percentilesHalf of the openings Campsite Sniper detected appeared at least 7 days before the stay date; the middle 50% land 3–14 days out. Set an alert if you want Campsite Sniper to monitor future openings.
Highest-churn sites
Most openings · 90d| Site | Openings | Share of all openings |
|---|---|---|
| B16 | 23 | 2.6% |
| C40 | 18 | 2.0% |
| D13 | 18 | 2.0% |
| D22 | 17 | 1.9% |
| B17 | 16 | 1.8% |
Site B16 had the most detected openings in the last 90 days: 23. One free watch covers every site here.
02 · Availability Outlook · Nov 2, 2026 – May 3, 2027 · of 178 monitored sites
Of the 13,359 tracked site-nights (Nov 2, 2026 – May 3, 2027): 13,359 unavailable (cause unspecified).
No online availability right now
Of the 13,359 tracked site-nights (Nov 2, 2026 – May 3, 2027): 13,359 unavailable (cause unspecified). A free alert tells you if any date opens online.
Load status
Nov 2, 2026 – May 3, 2027Not open online100%
Open site-nights0 / 13,359
Of the 13,359 tracked site-nights (Nov 2, 2026 – May 3, 2027): 13,359 unavailable (cause unspecified).
Open dates by month
Nov 2026 – May 2027No month in range currently shows online availability. 0 open site-nights across the tracked window — these site-nights are marked unavailable.
Holiday windows
Sites open per night · of 178 sites| Window | Night | Sites open | Status |
|---|---|---|---|
| Thanksgiving | THU Nov 26 | 0 | None open |
| FRI Nov 27 | 0 | None open | |
| SAT Nov 28 | 0 | None open | |
| Christmas | THU Dec 24 | 0 | None open |
| FRI Dec 25 | 0 | None open | |
| New Year | THU Dec 31 | 0 | None open |
| FRI Jan 1 | 0 | None open | |
| Memorial Day | FRI May 28 | 0 | None open |
| SAT May 29 | 0 | None open | |
| SUN May 30 | 0 | None open | |
| MON May 31 | 0 | None open |
Thanksgiving: no online availability on any tracked night. Christmas: no online availability on any tracked night. New Year: no online availability on any tracked night. Memorial Day: no online availability on any tracked night.
About Seawall Campground
Overview
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. All campsite reservations must be made through recreation.gov.
90% of campsites are available six months in advance, and released on a monthly basis as described above. 10% of campsites are available at 10:00 a.m. EST. fourteen (14) days in advance of the desired reservation date. Visitors are able to make same day reservations if campsites are available. All reservations must be made through recreation.gov. Reservations cannot be made through the campground office or in-person.
Recreation
From gentle walks along the rugged coastline, mountain hikes, tree lined carriage roads for biking and lakes for kayaking and canoeing, Acadia offers many opportunities to get outside and be active.
Park rangers at Acadia offer a variety of programs to suit every interest and activity level. Programs include walks, talks, hikes, narrated boat cruises, bike rides and more. Kids age 6-12 love Acadia's Junior Ranger Program.
A 27-mile, historic loop road system offers outstanding views of the park's ocean shoreline, coastal forests and mountain silhouettes.
Facilities
The majority of this family-oriented campground's sites are for small and large tents; some sites can accommodate RVs up to 35 ft. in length. Maneuvering RVs in the campground can be very difficult. Seawall Campground was not designed to accomodate large RVs and trailers. Please read campsite details and warnings carefully before reserving a site. Accommodations cannot be made for RVs or trailers that do not fit in reserved sites.
Flush toilets, running water and a dump station are provided, as are picnic tables and fire rings. Roads are paved. A picnic area is located on the shore across from the campground entrance.
***Fee shower facilities and camping supply stores are located 1 mile from the campground. There are no showers in the campground. The use of portable showers is prohibited.***
Natural Features
Southwest Harbor is located on the west side of Mount Desert Island. The west side of the Island is considered the "quiet side" of Mount Desert Island. All the sites at Seawall Campground are wooded and within a 10-minute walk to the ocean. There are many beautiful and quiet hiking trails on this side of the Island, as well as Echo Lake, a wonderful lake for swimming, fishing, canoeing, kayaking and picnics. Acadia is comprised of a cluster of islands on the Atlantic coast of Maine. Mountains, lakes, streams, wetlands, forests, meadows and beaches are all found within roughly 50,000 acres comprising Acadia.
Nearby Attractions
Acadia National Park is surrounded by scenic island harbors and quaint towns. Mount Desert Island, the Schoodic Peninsula, and Isle au Haut offer plenty of visitor services including restaurants, shops, museums, and tours. Please check with local Chambers of Commerce for more information.
178 monitored sitesRVs up to 35 ftNo hookups170 shadedPets OKFire pitsMax party 20
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 102 and travel through Bass Harbor. You will pass through Bass Harbor and keep left onto 102A. Campground approximately 2.4 miles. Campground entrance is on the left. Note: Detour in place.
The Campground Cannot Process Mail. If You Need To Receive Mail, It'S Best To Have It Sent To "General Delivery" At A Nearby Post Office.207-244-3600 - F.A.Q.S = (GO.NPS.GOV/ACADIACAMPING)
CampingInterpretive ProgramsRanger Station
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-234674 · facility
Photo gallery
Roll CS-234674 · Seawall Campground12 frames · facility
FAQ
How do I get a reservation at Seawall Campground?
Campsite Sniper's current snapshot shows none of the 13,359 tracked site-nights open for online reservation at Seawall Campground. That can mean dates are reserved, closed, not yet released, or offered first-come, first-served rather than online. Campsite Sniper has also detected 899 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Nov 2, 2026 18:20 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
How often do new openings appear at Seawall Campground?
Campsite Sniper detected 899 site-date openings here over the last 90 days, none in the last 7. A free alert watches around the clock and pings you the moment one appears.
Which sites at Seawall Campground fit a 35-foot RV?
14 of the 178 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 35 ft.
How far ahead of a stay do openings appear at Seawall Campground?
Half of the openings Campsite Sniper detected appeared at least 7 days before the stay date; the middle 50% landed 3-14 days out. Campsite Sniper can monitor future changes for dates you select.
Does Seawall Campground have online availability right now?
As of the Nov 2, 2026 snapshot, none of the 13,359 tracked site-nights are open for online reservation. That can mean dates are reserved, closed, not yet released, or offered first-come, first-served rather than online. A free Campsite Sniper alert tells you if any date opens online.
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