Abstract: A wiper device includes a wiper arm that includes a recess and that is swung due to rotation of a wiper motor, the wiper arm causes a wiper blade coupled to a leading end portion of the wiper arm to perform a wiping operation across a surface of a windshield glass, an acceleration sensor that is installed in the recess of the wiper arm, a drive circuit that generates a voltage to be applied to the wiper motor, and a control circuit that controls the drive circuit such that a voltage to reduce a change in acceleration of the wiper arm, detected by the acceleration sensor, is applied to the wiper motor.