With serious concerns about global change rising in the Mediterranean, we established a new climatic classification to follow hydrological and ecohydrological activities. The classification coincided with a geographical distribution ranging from the most seasonal and driest class in the south to the least seasonal and most humid in the north. RCM scenarios showed that northern classes evolve to southern ones with shorter humid seasons and earlier snowmelt which might affect hydrologic regimes.

This Mediterranean climatic classification is useful in following up water resources management and ecohydrological applications. Climatic classes ranged from the most seasonal and dry in the South to the least seasonal and most humid in the North, showing up the climatic continuity and change trends visibility. The climate change impact simulated under RCP scenarios showed an increase of the average seasonality and aridity, with north classes slowly evolving towards moderate southern classes.