Cannon Beach is located on the far northwest Oregon coast.  This topographic map shows the mountain range (called the "Coastal Range") a few miles inland stretching from the northwest corner of the state directly south to the California border. The topography of Oregon's northwest coastline is one of the climate control factors affecting Cannon Beach.

Source: http://www.ngdc.noaa.gov/cgi-bin/mgg/topo/state2.pl?region=or.jpg