 The temperature of floating photovoltaic panels can be affected by humidity, which can reduce their efficiency. To account for this, we developed a model that takes into account the effect of humidity and cooling due to splashing and evaporation on the panels. We found that the panel's efficiency could increase by up to 11.5%, depending on the location. This article was authored by Socrates Kaplanis, Aleni Kaplanis, and John K. Caldullis.