Most graphic's card that have a junction/hotspot temperature reading should be be in the 85'c to 95'c range. If your card is getting into the 100's Celsius then a few possible things are going on.
1.) The GPU voltage/power is very high, check your GPU only power draw. If you are using any custom tuning settings in the AMD software its recommended to disable them.
2.) Fan are not spinning at all, or not spinning fast enough. Double check that the fans seem to be spinning under load. If you have a custom fan profile try disabling it.
3.) The heatsink has come loose and is not sitting flush with the GPU. Only fix would be to remount the cooler and/or re tighten the GPU screws.
4.) Case airflow. Make sure fresh air can get to your graphics card using sufficient intake and exhaust fans in the system.
If you feel the card is malfunctioning, then please register your graphics card and file a support ticket at https://support.xfxproducts.com/, in the ticket describe the issue in detail and also provide what troubleshooting steps you have taken.