Castine, Maine occupies a unique geographical position at the head of Penobscot Bay, where the Penobscot River meets the Atlantic Ocean. The peninsula sits at elevations ranging from sea level to approximately 200 feet, creating varied camping terrain across the region. Campgrounds near Castine experience temperature variations of up to 30°F between day and night during peak summer months, so packing layers for any camping trip is essential.
What to do
Kayaking from waterfront sites: At Oceanfront Camping @ Reach Knolls, paddlers have direct water access. "We kayaked from the park is very good, with protected access into Mt. Desert Narrows," notes a visitor. The campground provides multiple launch points for those without waterfront sites.
Hiking accessible trails: Camden Hills State Park Campground offers numerous trails directly from the campground. A camper explains, "One of the real pluses of this park were the miles and miles of hiking trails just outside our doorstep." The park features both easy and challenging routes within walking distance of most sites.
Tide pool exploration: Many coastal campgrounds provide access to marine ecosystems during low tide. "At low tide you can do fun rock designs on the shore," mentions a Searsport Shores visitor. These intertidal zones offer opportunities to observe crabs, sea stars, and small fish trapped in rocky pools as the tide recedes.
What campers like
Ocean proximity: Mount Desert Campground offers remarkable water access. "We could launch our kayaks directly from the site," shares one camper who stayed at a waterfront spot. Many sites are positioned specifically to maximize ocean views and water activities.
Evening programming: Several campgrounds organize community activities at night. A camper at Searsport Shores notes, "They have casual jam sessions every night around the bonfire (bring your instrument and they'll fit you in!)." These organized events create opportunities to meet fellow campers.
Rural character: Maine Wild Blueberry Bliss provides a distinctly agricultural setting. "The land was quiet and peaceful - it is acres of blueberry fields, which create a special sense of being in nature," explains one camper. This working landscape offers a different camping experience than wooded or oceanfront sites.
What you should know
Shower availability varies: Most national park campgrounds like Blackwoods Campground lack shower facilities. As one camper points out, "The closest showers were around 10 minutes away and cost a decent amount." Bring quarters for pay showers at most facilities, typically costing $1-2 for a 5-minute shower.
Limited cell service: Coverage can drop significantly around peninsulas and in wooded areas. Many campgrounds offer Wi-Fi near their main offices only. One camper noted, "We didn't have reliable cell service" at a campsite near Castine, requiring trips to town for connectivity.
Weather volatility: Coastal fog can roll in quickly, reducing visibility and dropping temperatures by 10-15°F in minutes. Morning condensation is particularly heavy at oceanfront sites. Pack extra tarps and rainflys even during clear forecasts, as coastal weather patterns change rapidly.
Tips for camping with families
Oceanfront activities: Seawall Campground offers excellent tide exploration options for children. A family notes, "For stargazers, the short walk across the street to the beach will give you some unbelievable views of the milky way when the night is at peak darkness."
Animal encounters: Many campgrounds feature wildlife viewing opportunities. "We swam at their beach and saw a seal!" reports a family staying at Oceanfront Camping @ Reach Knolls. Morning and evening hours provide the best wildlife viewing opportunities.
Recreation amenities: Look for campgrounds with dedicated family spaces. At Searsport Shores, one camper appreciated that "There is a rec room... a large but cozy place to hang out if/when it rains, with a fireplace and cozy couches." Having indoor options helps during inclement weather with children.
Tips from RVers
Size restrictions: Most campgrounds near Castine limit RV size. At Mount Desert Campground, "They limit occupants to RVs less than 20' in length and have about a 50/50 mix of tent campers and small RV campers." Always call ahead to confirm your specific RV can be accommodated.
Utility hookups: Bar Harbor/Oceanside KOA provides varying hookup options. "Some rv sites are full hookup, some only electric and water, but there is a dump station onsite," explains one RVer. Water-electric sites typically cost $10-15 less per night than full hookup options.
Challenging terrain: The coastal topography creates navigation difficulties for larger vehicles. One RVer shares, "The sites are large however the terrain is difficult to navigate." Many campgrounds have narrow, winding access roads requiring careful maneuvering, particularly with trailers over 25 feet.
