In recent years, functional data analysis (FDA) has been used in many applications in order to analyze data that provide detail on curves, surfaces or other components of a continuum. The purpose of this research is mainly to incorporate and adapt visualization tools for the FDA of rainfall in the Taiz Region. Moreover, visualizing the temporal variations of rainfall in order to provide a clear understanding of the rainfall patterns and also to help in predicting the future. The current study has been conducted based on average monthly rainfall over the Taiz Region during the period of 1998-2018. The R software was used to process the data obtained from the Tropical Rainfall Measuring Mission in Taiz City. The functional rainfall data have been smoothed using penalized smoothing according to generalized cross-validation criteria. The results showed that the rainfall profiles in the Taiz Region depend significantly on their temporal locations due to the monsoonal influences, which reflect the distribution of rains in the spring and the summer seasons.

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