Oceanside Beach State Recreation Site is a state park in the U.S. state of Oregon. Administered by the Oregon Parks and Recreation Department, the park is open to the public and is fee-free. Amenities at the site, in the unincorporated community of Oceanside, include picnicking, wildlife watching, fishing, windsurfing, and kite flying. Beachcombing is popular in summer, and agate hunting is best in winter, when ocean currents remove sand. Oceanside is about 11 miles (18 km) west of Tillamook off U.S.