No one seems to know how to pronounce anything, due to the lack of voice acting. In addition, many names with official pronunciations in Japanese (noted below) have no official sources for English.
One of the reason many peoples were quite angry about The Legend of Zelda: Twilight Princess still not featuring any voice-acting aside from Midna's Simlish. How the hell are we supposed to pronounce names like "Ilia" or "Impaz"? The former is "ee-lee-ah" in Japan, but the latter was a Dub Name Change minus any actual dubbing.
The games before this one also had this problem: Aryll has at least three different pronunications.
No matter how hated Navi is, people can't agree if it's NAVV-ee or NAH-vee or NAVV-eye or even Navy.
Fan Dumb even exists regarding the pronunciation of Cucco: Is it "COO-coo" or "COO-koh" or "Cuck-oh"? A Hyrule Warriors interview pronounces it COO-koh.
Possibly the hardest name to pronounce: Ooccoo the Oocca. (Ooh-koo? Oh-ko-ah?)
Dekus get this a lot. "Deck-oo" or "Dee-ku"? Or like Count Dooku from Star Wars? According to Nintendo Land, it's the first one.
There's also the "Stal" prefix. Skeletal creatures use Stal in their name (Stalfos, Stalchild, Stallord). so is it "Stall" or is it pronounced more like the Stal in Stallion?
The Tula suffix, for the arachnids of hyrule. So is it "Too-la" like the name, or "tulla" as might come naturally when hearing names like "Skulltula" or "Skullwalltula"? The correct pronunciation is actually CHələ or "Chulla", like in Tarantula, where the name is derived from.