A photoacoustic apparatus includes a light irradiation unit configured to irradiate a subject with light a plurality of times； a driving unit configured to move a supporting member so that relative positions of the supporting member and the subject differ at each of the plurality of times； a plurality of transducers configured to receive acoustic waves generated through the plurality of times of irradiation and output a plurality of groups of reception signals corresponding to the plurality of times of irradiation； the supporting member configured to support the transducers such that directional axes of at least some of the transducers converge； a first memory configured to store the groups of reception signals； and a processing unit configured to obtain subject information at a target position by assigning, to each of the groups of reception signals, a weight corresponding to relative positions of the supporting member and the target position.
