SOS Encounter: Mount Hokulani (15%)
Looking for Clefable? It isn't found in the wild in this game — evolve Clefairy (Moon Stone).
Its base catch rate is 150 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Love Ball, Heal Ball or Moon Ball.
Evolution: Cleffa → Clefairy → Clefable (Moon Stone).
Clefairy in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)