Iwate rhymes with:
await, equate, kuwait, lightweight, overweight, wait, waite, waitt, wayt, weight, whate
Iwate sounds like:
i'd, id, ida, idaho, ide, idea, idette, idiot, ido, ihde, iida, iodide, iota, iott, it, it'd, it-wit, ita, ito, itoh, itty, iwata