Hello,
You have described your ears becoming hot in morning and evening.
This is a presentation of hot ears which has many reasons.
We need to get some more details about your problem, like whether it is associated with redness and swelling of ear.
Also I would like to know whether there is associated mood change or emotional change at that time.
Next Steps
Depending on the cause found, this problem will be managed, you can consult any physician for this.
Health Tips
However, with this only complaint, it doesn't appear to be a serious problem for now but it definitely needs evaluation and treatment.