An induction luminaire system for use in high-moisture environments includes a transmitter coupling structure housing an induction transmitter having a first planar coil. An exterior of the transmitter coupling structure is engageable with a wall fitting or a lighting niche. The transmitter coupling structure has a rear surface which extends into the wall fitting or the lighting niche not more than a predetermined distance. An induction receiver has a second planar coil to receive an induction signal from the first planar coil, wherein the induction receiver is in electrical communication with the light module, and wherein the induction receiver provides power from the received induction signal to a light module. A receiver coupling structure houses the induction receiver and having an interior recess, wherein a portion of the transmitter coupling structure housing the first planar coil is removably positionable within the interior recess.