Resumen
During 1990, rainfall over baja california sur, mexico, reached very high values, accounting for the third highest record since 1950. the characterization of the seasonal precipitation patterns on that year was intended, by the anlysis of some rainfall temporal indicators: relative contribution of the summer and winter precipitation, interannual variation among both coasts and tropical hurricanes occurring over the area; as well as some spatial ones; like the modification of the average previously defined precipitation spatial distribution (regions) over the state. resuts are compared with those registered during 1983, a year with high precipitations derived from by a particulrly intense enso event. the comparative analysis of the selected indicators shows that the conditions originating high rainfall values during 1990 were quite different than the conditions on 1983.