About 13% of the world’s shorelines are barrier coasts. Most formed in the late Holocene; therefore, research now focuses on present-day geological and geomorphological controls. The Sukha Spit on the southwestern margin of the Kinburn Peninsula is Ukraine’s youngest accumulative coastal landform (~45 years), enabling assessment of its current morphodynamic setting and a reliable reconstruction of its evolution. This study combines field observations (2019–2021), a retrospective analysis of cartographic materials (1775–1986), and the interpretation of satellite data (1975–2025). ArcGIS Pro and RStudio were used to assess the spatiotemporal dynamics of the spit. Historical sources indicate that the subaerial portion of the barrier began to form in the first half of the twentieth century, proceeding episodically and punctuated by erosional events. The modern phase is linked to a reorganization of the subaqueous sandbar in the late 1970s and the 1981 storm. Satellite records show net progradation: spit length increased from ~1.07 km (1985) to ~4.10 km (2025). Growth is episodic, with periods of elongation alternating with stabilization and erosion, consistent with field observations from 2019 to 2021. The evolution of the Sukha Spit reflects directed yet episodic growth of accretionary forms governed by hydrodynamic forcing and the availability of nearshore marine sediments. This site refines understanding of barrier formation mechanisms in the Black Sea and provides a model for analogous coasts.