his dataset contains temperature data acquired between June 2019 and September 2020 with an array of 31 autonomous temperature probes installed in smoker orifices, cracks or patches of diffuse hydrothermal venting. We used 5 types of probes (HTW, HTWN, HTNKE, LTW and LTGrad). Probes locations, acquisition parameters and clock drift values (UTC-timeprobe) are listed in the metadata file.