- Turn Island is part of the Marine Parks and Boat Moorage system. It has three moorage buoys. Facility use is first come, first served, with continuous moorage limited to three consecutive nights. Fees are charged year around. Call (360) 753-5771 for a fee update as all fees are subject to change.
Primitive campsites are located on the island.
Recreation - Recreational activities in the park include primitive camping and exploring the island.
Climate - Washington's climate varies with each region. Turn Island State Park is located in an area "protected" by surrounding ocean waters and mountain ranges. Temperatures are consistently moderate, rarely topping 80 degrees in the summer and rarely falling below 30 degrees in the winter.
Annual rainfall averages 29 inches, approximately half that of Seattle. In the summer months, and especially during September and early October, the islands may go for weeks without a cloud in the sky. Snowfalls occur once or twice a year and usually total only one or two inches. Northeast winds may cause temperature extremes.
Island tides range over 14 feet. The extreme low tide of 4.0 feet to the extreme high tide of over 10 feet.
Turn Island is accessible only by boat. It is located off the southern tip of Shaw Island in San Juan County.