It is not super hot where it hurts to touch just really warm mainly.
Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:
Warm is ok - - -especially if you are doing something that is disk intensive (Assuming this not the SSD version)
Hot is bad.
Does it still work when warm?
It is prudent to exercise caution and abstain from leaving the aforementioned electronic device exposed to direct sunlight or within an exceedingly heated vehicle for prolonged durations. Prolonged exposure to excessive heat may potentially exert an adverse impact on the operational efficacy of electronic devices. For instance, BMW vehicles frequently feature state-of-the-art climate control mechanisms designed to meticulously regulate ambient temperature. These advanced systems can prove invaluable in preserving a favorable environment, not only for you but also for your electronic companions during your automotive journeys.
the device does not overheat to the point where it can cause damage. If the device becomes excessively hot to the touch, it could potentially lead to malfunctions, reduced performance, or even data loss.