A dynamical model presented earlier by the author for the orographic rainfall over the Western Ghats and based on analytical solutions is modified here in three respects with the aid of numerical methods. Like the earlier approximate model, the modified model also assumes a saturated atmosphere with pseudo-adiabatic lapse rate and is based on linearized equations. The rainfall, as computed from the modified model, is in good agreement, both in intensity and in distribution, with the observed rainfall on the windward side of the mountain. Also the modified model suggests that rainfall due to orography may extend out to about 40 km. or so on the lee side from the crest of the mountain and thus explains at least a part of the lee-side rainfall. Abstract A dynamical model presented earlier by the author for the orographic rainfall over the Western Ghats and based on analytical solutions is modified here in three respects with the aid of numerical methods. Like the earlier approximate model, the modified model also assumes a saturated atmosphere with pseudo-adiabatic lapse rate and is based on linearized equations. The rainfall, as computed from the modified model, is in good agreement, both in intensity and in distribution, with the observed rainfall on the windward side of the mountain. Also the modified model suggests that rainfall due to orography may extend out to about 40 km. or so on the lee side from the crest of the mountain and thus explains at least a part of the lee-side rainfall.