This dataset contains temperature data acquired between August 2018 and July 2019 with an array of 35 autonomous temperature probes installed in smoker orifices, cracks or patches of diffuse hydrothermal venting. We used 6 types of probes (HTW, HTWN, HTNKE, LTW, LTNKE and LTiButton). Probes locations, acquisition parameters and clock drift values (UTC-timeprobe) are listed in the metadata file.