A magnetic mount string light apparatus for easily mounting and dismounting decorative lights includes a male plug to engage a standard outlet. A female plug receives the male plug of an additional magnetic mount string light apparatus. A pair of electrical wires is coupled to the male plug and the female plug. Each electrical wire extends from the male plug to the female plug. A plurality of lights is coupled to the pair of electrical wires. A magnetic wire is coupled to the male plug and the female plug. The magnetic wire extends from the male plug to the female plug and selectively engages a ferrous surface on a building.