This dataset contains S-band Polarimetric (S-Pol) refractivity data in NetCDF format from the Terrain-influenced Monsoon Rainfall Experiment (TiMREX). There are five variables in each NetCDF file: radar-retrieved refractivity (N), refractivity error (N_error), target quality (Quality), phase difference between the current phase and the reference phase (Diff Phase), and the smoothed phase difference (DifphaseFit). The dimension of each variable is 480 x 300. There are 480 azimuth angles with 0.75-degree intervals. There are 300 gates with 0.75 km intervals. The missing value is -9999. The location of the S-Pol radar during TiMREX/SoWMEX(2008) experiment is 22.5267 N, 120.4335 E.