In ‘Harry Potter and the Goblet of Fire,’ Harry is 14 years old. The story begins with Harry spending the summer at the Dursleys’ house before returning to Hogwarts for his fourth year. His birthday, July 31st, marks the start of the school year, and he turns 14 during this time. This age is significant as it places Harry in his mid-teens, a period of growth and challenges, both magically and personally, as he faces the Triwizard Tournament and the return of Voldemort.