This dataset contains temperature data acquired between September 2020 and june 2021 with an array of 33 autonomous temperature probes installed in smoker orifices, cracks or patches of diffuse hydrothermal venting. We used 6 types of probes (HTW, HTWN, HTNKE, LTNKE, LTW and LTGrad). Probes locations, acquisition parameters and clock drift values (UTC-timeprobe) are listed in the metadata file.