Poleward range expansions of corals in response to warming oceans have been historically observed, however contemporary expansion rates of some coral species are much more rapid as global temperatures rise at unprecedented rates. Range expansion can lead to reduced genetic diversity and surfing of deleterious mutations in expanding populations, in turn potentially limiting the ability for the species to adapt and persist in their new environment. Expansions that overcome these population bottleneck pressures and successfully colonize are attributed to multiple introductions from different sources, hybridization with native populations, or rapid adaptive evolution. Here, we investigate population genomic patterns of the reef-building coral Acropora hyacinthus along a latitudinal cline that includes a well-established range expansion front in Japan using 2bRADseq. A total of 184 coral samples were collected across 7 sites spanning from ~24°N to its northern range front at ~33°N. We find evidence of bottleneck pressures associated with expansion events including higher clonality, linkage disequilibrium, mutation load and lower genetic diversity in range edge populations as well as asymmetric migration between populations. We also describe genomic signatures of local adaptation possibly attributed to lower winter temperatures experienced at the more recently expanded northern populations. Together these data illuminate the genetic repercussions of range expansion in a coral and highlight how limited dispersal and/or adaptation to colder temperatures along the expansion front may facilitate further range expansions in this population.