A folding boat seat system mountable to a vertical mounting surface such as a bulkhead of the boat. The system includes a seat; a pair of guide followers extending from opposite sides of the seat; a pair of guides mountable to the mounting surface and configured for receiving the guide followers; a substantially U-shaped frame member having opposite ends pivotally mounted adjacent the guide followers; and a pair of bias struts, each having a first end pivotally mounted adjacent one of the guides and a second end pivotally mounted to support the seat.