This dataset contains the data returned from a CTD sensor associated with the tide gauge at Galway Port, Co. Galway, Ireland. The dataset begins in November 2024 and data collection is currently ongoing. There is a Sea-Bird SBE37 installed at the site collecting temperature, pressure, conductivity and salinity measurements. Data are acquired and published in near-real-time. The CTD sensor has been deployed to collect temperature, conductivity, salinity and pressure data as ancillary measurements to the tide gauge also situated at this location.