In this work, we investigate how the molarity of the solution affects the physical characteristics of MgO coatings. By oxidizing simply thermally magnesium that had been electrodeposited on aluminium substrates, stable MgO thin films are produced. The samples are characterized by x-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (FEG-SEM) equipped with energy dispersive x-ray analysis (EDX), a profilometer. The wettability properties of the synthesized films are estimated by measuring the contact angle between the surface of the films and a deposited water drop (WCA). The optimal MgO nanostructure coating crystallizes when magnesium layers are electroplated with 0.2 M of the solution for two hours at 500°C. The MgO-coating crystal orientation is influenced by the molarity of the solution. Data from the XRD analysis are corroborated by Raman-spectroscopy results. Normal vibrational modes, which are compatible with the MgO structure, are visible in the acquired spectra. The study findings suggest that the vibrational mode of the MgO coating described in this work is affected by changing the solution molarity. This form may be responsible for the MgO$_{0.2}$ layer best hydrophobicity, which is caused by air trapping between the nanowires (fibres) to prevent water from clinging to the film.