The objective here is to build a predictor of the wave effect on the tidal current. The tide is, in fact, influenced by the superficial wave, in particular when the measure is taken at relatively low depths. Thus, while a cyclic behaviour of the tide, with periods of the order of some hours, is relatively easy to be forecast, the effect of the wave might be predicted employing the available measures of the tidal current. This effect is often characterized by much smaller periods, some second in general, and is less regular the tidal main oscillation. The predictiors proposed are dynamical models, based on observers, that can provide the future estimation of the value of the wave-induced current.