Coastal dunes are a natural space resulting from the interaction between the ocean and the continent. Together with the beach, they function as a dissipator of wave, tidal and wind energy and protect the adjacent territory from hydro-meteorological phenomena. Coastal adaptation strategies must respond to the state of the elements of the Dune -Beach system, thus, through the application of 14 biophysical indicators grouped in a Dune Vulnerability Index (DVI), a spatio-temporal analysis of vegetation cover with Google EarthTm 2016, 2017 and 2019 images, geo-referenced ortho mosaics with an eBee drone and the review of planning instruments of five sites on the Pacific coast in Colima, Mexico; this preventive and risk reduction tool for climate variability and sea level rise was developed. The results reveal that vulnerability in the