Posey Island State Park is a small, one-acre marine camping park with 1,000 feet of shoreline. It is located a quarter mile north of Pearl Island, near Roche Harbor, San Juan Island. Posey Island is part of the Cascadia Marine Trail. All onshore campsites are for the exclusive use of boaters arriving by human- or wind-powered watercraft.
Posey Island State Park is located .25 miles (0.40 km) north of Pearl Island, near Roche Harbor, San Juan Island. The park is part of the Cascadia Marine Trail and all campsites are restricted to visitors arriving in human- or wind-powered watercraft

Fun Things To Do:
Camping and wildflower viewing are popular island activities.
Park hours/updates:
The park is open year round for camping and day use.
Summer hours: 6:30 a.m. to dusk.
Winter hours: 8 a.m. to dusk.
Quiet hours: 10 p.m. to 6:30 a.m. No generators in use 9 p.m. to 8 a.m.

Address:
Friday Harbor, WA, 98250
Phone: (360) 378-2044
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