Acadia National Park · Maine
Seawall Campground — how to get a site when it's sold out
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.
Booking Seawall Campground
Sites at Seawall Campground are reserved through Recreation.gov. Sites here can be reserved in advance through the official system, and they are claimed fast — cancellations then trickle back all season, unannounced, at any hour of the day or night.
Site facts
| Total sites | 210 |
|---|---|
| Site types | Standard, Tent only, RV, Group, Walk-to / hike-to |
| Book through | Recreation.gov |
| Official listing | Recreation.gov |
The cancellation play at Seawall Campground
Because sites are booked months ahead, a steady share of reservations get cancelled as trips fall through. Each cancellation instantly returns that site and those nights to the official calendar — first-come, first-served, no waitlist, no announcement. Refreshing the booking page yourself, every few minutes for weeks, works in theory. In practice, the people who get these sites are the ones who hear about the opening first.
itOpened scans the Recreation.gov calendar for Seawall Campground around the clock. When a site matching your dates and your vehicle opens, you get a text with a direct link to it. You book it yourself, in your own account, at the normal price. We never book, hold, or resell — your fee pays for monitoring, and openings are first-come, so speed is the whole game.
Other campgrounds in Acadia National Park
| Blackwoods Campground | Cancellation alerts available |
|---|---|
| Schoodic Woods Campground | Cancellation alerts available |
| Duck Harbor Campground | Cancellation alerts available |
Page data refreshed 2026-10-29. Site facts come from the official directory listing for Seawall Campground; cancellation statistics come from our own scanning logs.