Previous chapters delivered comprehensive understanding of the utilization of the optical remote sensing for monitoring the tsunami wave impacts on the coastal waters. This chapter critically evaluates the potential of synthetic aperture radar’s (SAR) existing theories for observing the effects of tsunami waves on the coastal waters. Unquestionably, SAR techniques are intensively used for monitoring and modelling the sea surface physical properties, for instance, wave spectra, current movements, and bathymetry mapping. The main question which can of course be raised is how SAR can monitor the boxing day effects, although there is no any availability of SAR data during 26th December 2004?