A plasma display apparatus and a driving method thereof are provided. The plasma display apparatus comprises: a plasma display panel comprising a plurality of scan electrodes, sustain electrodes, and address electrodes intersecting with the scan electrodes; a scan driver for applying a negative waveform and a reset waveform subsequent to the negative waveform to the scan electrode, and applying a scan waveform subsequent to the reset waveform to the scan electrode; a sustain driver for applying a positive waveform corresponding to the negative waveform to the sustain electrode; and a data driver for applying an address waveform to the address electrode, wherein a scan waveform is applied to one scan electrode and applying time points among at least two address waveforms applied to the address electrode corresponding to the scan waveform are different from each other, wherein, when the temperature of the plasma display panel is more than a threshold temperature, an idle period from an applying time point of a last sustain waveform applied to the scan electrode or the sustain electrode to an applying time point of a predetermined waveform gets different.