The dataset contains three-dimensional, quasi time-resolved velocity field of a sweeping jet from a fluidic oscillator. The data is acquired experimentally at the Technische Universität Berlin by employing a traversable stereoscopic particle image velocimetry system. The presented data served as the basis for several publications. Detailed information on the scientific background, the associated publications, the experimental setup, the structure of the data, and some first steps for importing the data are provided along with the uploaded data. The dataset is published in order to allow other researchers easy access. Therefore, it may serve as a basis for future projects and as a dataset for the validation of numerical studies or visualization techniques.