[Disclaimer: Given their associated uncertainties and coarse resolution, the data layers in this archive are meant for broad-scale screening and studies integrating across multiple locations. We emphasize in the strongest possible terms that data from individual points are not suitable for any form of local, site-specific assessment or study; users interested in these use cases should prefer relevant higher-precision, local datasets. We also emphasize that any application should consider the uncertainties and limitations documented in the associated report, whether stemming from the original data sources or introduced during the standardization process] The European project DuneFront (https://dunefront.eu, https://cordis.europa.eu/project/id/101135410) is working to improve coastal protection across Europe by using Nature-based Solutions (NbS), such as Dune-Dike hybrids (DD-hybrids), to defend coastlines from extreme weather and rising sea levels. Within this project, this “Physical Boundary Conditions” deliverable focuses on collecting and mapping key physical boundary conditions that affect the effectiveness of these solutions. The aim was to create a consistent, Europe-wide, high-quality dataset that helps understand how DD-hybrids are, and will be, affected by waves, tides, weather patterns, and climate change. The dataset is made of 5 geopackage files, each duplicated in csv format for accessibility. See the deliverable report (pdf) for detailed information on each file, use notes, and literature references. We explicitly recommend the use of the gpkg files over csv for any GIS application, for reasons that are detailed in the report.