A navigation device for a vehicle comprises a current position detection unit for detecting a current position of the vehicle and a control unit. The control unit executes, when the detected current position approaches a point of guidance along a route, route guidance indicating a path to be taken at the point of guidance in order to go through the point of guidance along the route. The control unit also estimates a degree of traveling stability of a vehicle in traveling on a road and controls a timing to execute the route guidance so that the timing becomes earlier when the estimated degree of the traveling stability is smaller.