TTFields therapy is a proven approach for treating tumors using electric fields. This application describes systems and methods for measuring the temperature at the electrode elements of the transducer arrays that are used to apply the TTFields to a subject. A distal circuit is positioned adjacent to each transducer array, and the distal circuit interfaces with temperature sensors in the transducer array to obtain temperature readings. Those temperature readings are transmitted to a central hub. In some embodiments, temperature measurements from all of the distal circuits occur simultaneously.