A shower curtain retainer assembly for retaining the bottom of a shower curtain against a shower enclosure wall is described. The assembly includes a first set of plastic disks, a second set of plastic disks and a set of magnetically responsive plates. A magnet is encased in each plastic disk. The magnetically responsive plates are attached to the inside wall of the shower enclosure that is adjacent to the bottom of the shower curtain. The first set of plastic disks are positioned on the front face of the shower curtain and are aligned with the positions of the magnetically responsive plates. The second set of plates are positioned on the back face of the curtain in juxtaposition with the first set of plastic disks. The first and second sets of plastic disks are held in place by magnetic attraction forces from the magnets encased in the disks. When the shower curtain is closed, the first set of plastic disks become magnetically attached to the magnetically responsive plates. Because the bottom of the shower curtain is interposed between the first and second sets of plastic disks, it becomes secured against the shower enclosure wall. A variation of the invention includes attaching the magnetically responsive plates to part of the top side of a shower mat which extends over the base and wall of the shower enclosure. The bottom side of the mat is secured by suction cups to the base and wall which also enhances user safety.