The Regional Ocean Modeling System (ROMS) is a free-surface, terrain-following, primitive equations ocean model widely used by the scientific community for a diverse range of applications. The operational Northeast Atlantic (NEATL) model is an implementation of the ROMS model that covers all Irish waters. The NEATL dataset contains parameters output by this model such as sea surface height (m), sea temperature (C), salinity, sea water X velocity (m/s) and sea water Y velocity (m/s). The NEATL model covers a portion of the eastern Atlantic ocean that from Iberian Peninsula to Iceland. The average horizontal resolution of the model grid is approximately 1900 metres but the horizontal horizontal resolution around Irish coastal waters is 1100 to 1500 metres. Model data was produced for the previous 30 days and 3 days into the future. The NEATL model was an operational model forced by operational atmospheric (ECMWF) and boundary (Copernicus GLOBAL_ANALYSIS_FORECAST_PHY_001_024) forcing. The NEATL operational system has provided a daily 3-day forecast and a weekly 7-day analysis. The NEATL model was run to forecast oceanographic parameters such as temperature, sea level and currents level for Irish coastal waters to support a variety of end-user services such as HAB (harmful algal bloom) warning systems and maritime search and rescue. The NEATL model was operated by the Oceanographic Services team within Ocean Science and Information Services division of the Marine Institute (Ireland). Model completed for the days it is operational and produced output.