Is a high palate mouth normal?

I can be: The palate can appear flat to a very high vault in normal conditions. Your dentist should be able to tel if it is normal.

Palatal anatomy: The shape of your palate is genetically determined. It can be altered via pernicious habits, such as digit sucking, chronic sinusitis, enlarged t;a, etc. See an orthodontist to determine if your upper jaw width matches your lower jaw width. If not, rx may be in order.

Variable: Variable. Some high, low or in between.