Augmentation in the heat transfer rate through wall roughness is a passive technique which is extensively being used in the modern technologies. For rotating disk geometries its implementation is very rare as the literature does not include any significant works on this topic except a very few. The isothermal rotating wavy disk is available in literature (and has been cited in the introduction part) in which the author reported 15% increase in the rate of heat transfer compared to the flat disk case. Such an increased heat transfer rate can further be increased by assuming certain other flow assumptions. An attempt in this regard has been made in order to acquire the increased heat transfer coefficient when the rotating wavy disk temperature is distributed non-uniformly. The disk temperature is assumed to depend on radial distance in the form of power-law function. In the situation of radially increasing disk temperature following a quatratic variations along the radius up to 110% intensification in the overall heat exchange is observed from the hot wavy disk (with two waves and surface roughness ratio equal to 0.1) to the surrounding quiescent air in comparison to an isothermal flat disk. Apart from this, rate of heat transfer from the wavy disk has also been estimated for a very wide range of Prandtl number (10(-2) to 10(4)) in this study. In the current analysis some threshold values of the power-law exponent of the disk temperature distribution have also been captured for which the heat transfer is seized. The invariant threshold value (n(*) = 2) of the flat disk is observed to change for a non-flat disk case. However, this variation is found to be small for a variety of fluids. Due to the analogy between convective heat transfer and mass transfer phenomena the obtained findings of this study are two fold as they also characterize the mass transfer rate from a wavy rotating disk with a uniform distribution of mass at the disk surface. (C) 2018 Elsevier Ltd. All rights reserved.