How old is Hotaru Yamaguchi?

Answer 1

In the filler arc, she is probably around the same age as Naruto, 16 years old.

Answer 2

This is how old she is in there corresponding parts: Age

• Part I: 15-16
• Part II: 18-19

Any other information required about Temari can be found here: http://naruto.wikia.com/wiki/Temari

Hope this helps

Answer 3

As of June 2014, Hotaru Yamaguchi is 23 years old.