This dataset contains near-bottom current and temperature data for site D04 collected in the central Gulf of Mexico using URI and Sonardyne inverted echo sounders (IES) between June 2019 and May 2021. Measurements include eastward (u) and northward (v) velocities, temperature, and magnetic declination, with data processed into hourly averages from 30-minute intervals. The dataset is provided in NetCDF format.