A radiation imaging apparatus, comprising a sensor array and a controller, wherein the controller shifts to a non-capturing mode upon receiving an instruction representing a suspension of radiographic imaging, and shifts to a capturing mode upon receiving an instruction representing a start of radiographic imaging, and the controller performs, in the capturing mode, one of movie capturing and continuous capturing in which an operation of driving the sensor array in response to one radiation irradiation for the sensor array and acquiring image data of one frame from the sensor array is repetitively executed, and, in the non-capturing mode, drives the sensor array to suppress lowering of a temperature of the sensor array in the non-capturing mode from the temperature of the sensor array in the capturing mode.
