summary: Complementary data from the article submitted to PlosOne with the title "Transient response of the Northwestern Iberian upwelling regime" by Cordeiro NGF, Nolasco R, Dubert J and Barton ED. All data, except the wind, was obtained in the framework of the project “Shelf–ocean exchanges in the Canaries–Iberian Large Marine Ecosystem”, CAIBEX - CTM2007-66408-C02. Wind data was provided by Tiago Luna, under the supervision of Alfredo Rocha, from the Meteorology and Climatology Group of the University of Aveiro.