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This paper examines the spatial and temporal rainfall characteristics of the region of Valencia, Western Mediterranean Basin (east Spain), during the World Meteorological Organization (WMO) normal period 1961–1990. The study used a dense and homogeneous daily precipitation database comprising 97 rain‐gauge stations. Total and monthly rainfall concentrations have been studied in the context of their mean values, interannual variability and spatial diversification. Trends have been analysed using both parametric and non‐parametric tests. In order to establish the spatial distribution of rainfall patterns and to detect homogeneous areas with similar rainfall evolution, a statistic based on the Cramér–von Mises test is proposed. The kriging interpolation methods for characterizing the magnitude of observed changes is used.

Areas with contrasting rainfall evolution are identified. In more humid areas, a significant …