Portuguese pronunciation: [Zhoo-a-keem]. Even though the name "looks"/spelled similar to Joaquin (Spanish), Joaquim (Portuguese) is a completely different name and is often confused with Joaquin.English (American) pronunciation: [Jo-Kwim] the "a" is silent.
Tigerlily's correct, it's "zho-ah-kee". I mostly hear it pronounced zho-AH-kee, with a slight "n" sound at the end, but that's hard to get (or even hear for a lot of people) unless you're familiar with the Portuguese language.It is not to be confused with the Spanish JOAQUÍN, pronounced "wah-KEEN", like Joaquin Phoenix.