Why Does an Outlet Feel Warm?
An outlet that feels noticeably warm deserves attention, especially when the warmth is new or comes with other symptoms.
By Everyday Home Advice Editorial Team

An outlet that feels noticeably warm deserves attention, especially when the warmth is new or comes with other symptoms.
Stop using it if something seems wrong
Unplug devices if you can do so safely, and don't keep using an outlet that has a burning odor, discoloration, melting, crackling, buzzing, or smoke.
Could the device be creating the heat?
Sometimes heat from a plug-in device or power adapter makes the area feel warm. Try to tell whether the heat is coming from the device or the outlet itself, without dismantling anything.
Why might an outlet become hot?
Possible causes include loose connections, damaged components, excessive load, worn receptacles, and other electrical problems. Pinning down the exact cause may require electrical testing.
Don't remove the outlet to investigate
A warm electrical device is not the place to learn live-wiring repair. For an outlet that stays hot or shows damage: Find Local Electrical Help