There are many factors which can cause the hot sensation of the feet.
Diabetes, smoking, alcohol play a major role.
Among other causes vitamin B12 defficiency, neuropathy, decreased thrombocyte, gout, thyroid, liver, kidney disease, even sometimes allergy have effect on this sensation of feet.
As it is continuing you can consult doctor for examination and if needed with investigations for definitive treatment.
I hope this information will be helpful.