The droplet’s impact dynamics on the superhydrophobic substrate can be manipulated by varying the viscosity of the droplet. A phase-field numerical technique with a dynamic contact angle (DCA) approach is used to investigate the droplet impact on a superhydrophobic surface. With the increase in the Weber number (We), the spreading factor \(\left( \beta \right)\) of the impacting droplet increases, and the non-dimensionalized spreading height decreases for all Ohnesorge numbers. The minimum value of non-dimensionalized spreading height is attained in the recoiling phase rather than when the droplets attain maximum spreading \((D_{{{\text{max}}}} )\) . It means the droplet velocity decreases at the center when the droplet is at its maximum spreading factor. The spreading factor \(\left( \beta \right)\) decreases, and the minimum value of non-dimensionalized spreading height increases at the droplet's center with the increase in the Oh for all We because of the more losses of kinetic energy (K.E) into the viscous dissipation energy. The time required to rebound the droplet is the same up to Ohnesorge number = 0.0916, and after an increment in Ohnesorge number, bouncing time increases. With the further increase in Ohnesorge number, the droplet completely suppresses the rebound behavior of the droplets. The droplet's height decreases as the Ohnesorge number increases for all Weber numbers when the droplet starts to rebound. The percentage change in \(\beta_{{{\text{max}}}}\) is 61.75%, 85.92%, and 90.34% at Oh  = 0.732. It means viscosity greatly affects the dynamics phenomena at a lower We number.