Wetter rhymes with:
sweater, better, bettor, debtor, detter, etter, fetter, fretter, geter, getter, jetter, ketter, letter, metter, mettur, netter, petr, petre, petter, pipetter, retter, schetter, setter, shetter, stetter, sweater, tretter, tschetter, vetere, vetter, yetter
Wetter sounds like:
wader, waiter, water, waterer, waterway, watery, watry, weather, weider, wetterau, what're, whether, whitehair, whiter, whitewater, whither, whitrow, whittier, wiater, widder, wider, widower, widuri, wieder, withdraw, withdrew, wither, witherow, withrow, witter, wittwer, witwer, woodrow, wydra