This is an irregular verb. It follows the conjugation pattern of the verb parecer.
PresentPresente
El río nace en las montañas del norte.
The river begins in the northern mountains.
PreteritePretérito indefinido
Yo nací en una ciudad pequeña.
I was born in a small town.
FutureFuturo
El bebé nacerá en primavera.
The baby will be born in spring.