Genus characteristics include long limbs and toes with well-developed lamellae. Some webbing occurs on the hind limbs and toes. Rhacodactylus possess prehensile tails which also have lamellae to assist in climbing. These are for the most part arboreal geckos. Rhacodactylus are nocturnal geckos.
The species are egg layers with the exception of R. trachyrhynchus which gives live birth. Rhacodactylus geckos are sexually dimorphic, with the males possessing larger preanal pores than the females as well as a distinct hemipenis pocket.
Males tend to be stockier than females with the exception of R. auriculatus in which species the males are much slimmer than the females.