A viewing device for a vehicle has: a rear lateral camera that captures images of a vehicle rear lateral side; a monitor that displays captured images of the rear lateral camera; and a control device that, in a case in which a monitor checking situation in which a vehicle periphery is dark is detected from vehicle information acquired from a vehicle ECU, controls the rear lateral camera so as to adjust exposure at a time of image capturing by the rear lateral camera such that captured images that are displayed on the monitor become brighter.