10 minute observations of short and long waves on the North Sea at stations A12, Q1 and EUR. A12 and Q1 from 2009-2018 and EUR from 2010-2019. Data have been split in two directories: short_waves for the spectral sea-swell conditions and long_waves for the long wave surface elevation time series. Data have been collected by Rijkswaterstaat and used in the manuscript by Reniers et al., 2020, North-Sea Infragravity wave observations, JMSE, in prep.