Ocean Beach is a beach on the west coast of San Francisco, California, United States, bordering the Pacific Ocean. It is adjacent to Golden Gate Park, the Richmond District, and the Sunset District. The Great Highway runs alongside the beach, and the Cliff House and the site of the former Sutro Baths sit at the northern end. The beach is a part of the Golden Gate National Recreation Area, which is administered by the National Park Service. During the late spring and summer, San Francisco's characteristic foggy weather frequently envelops the beach. The average temperature for the last 5 years has been Most of the beach-friendly weather occurs in the fall (usually mid to late September) and early in the spring when fog and strong sea breezes are less prevalent. Dry winter days also tend to provide excellent weather at Ocean Beach (especially in drought years). The water at Ocean Beach is noteworthy for its strong, dangerous currents and powerful waves, which make it popular among serious surfers. The water is cold, due in part to a process known as upwelling, in which frigid water from below the ocean surface rises to replace the surface water that moves away from the beach as a result of the Coriolis effect. The rapid rip currents, cold water, and threat of sneaker waves make the ocean dangerous for casual swimmers and even those who simply want to set foot in it, especially those without wetsuits and lifejackets, because swimmers and even waders have been swept away and drowned. The southern portion of the beach by Sloat Boulevard has some of the cleanest water in the state. Surfing The beach is one of the Bay Area's top surfing spots and — when breaking well — can be world class, especially during large swells in the winter months. Surfers and other swimmers have died at Ocean Beach; one example occurred in May 2006, with the next-previous death taking place in January 2006. Prior to that, it had been about five years since a death at Ocean Beach. In 1998, a record seven people lost their lives there. The Ocean Beach surfing community is served by four surf shops and several popular beach-themed cafes. Seal Rock is a prominent local feature of the area. Third Eye Blind's Motorcycle Drive By was written about this beach. On November 6, 2011, Ocean Beach hosted the Rip Curl Pro