This study employs a boundary layer approximation to solve steady filmwise condensation in a homogeneous porous layer near a cold finite-size horizontal disk. Numerical solutions are obtained using the fourth-order Runge-Kutta scheme with a shooting method. A theoretical analysis is performed to predict the influence of suction effects on the rate of condensation heat transfer. The dimensionless average Nusselt number and the thickness of the dimensionless liquid film on the disk surface are examined at various Darcy numbers, Jakob numbers, Prandtl numbers, modified Rayleigh numbers, and suction parameters. Finally, an algebraic correlation function is presented for the average Nusselt number based on the obtained numerical results.