Walk: Mount Lanakila (20%), Route 14 (10%), Tapu Village (10%)
SOS Encounter: Mount Lanakila, Tapu Village
Its base catch rate is 30 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 Timer Ball, Moon Ball or Great Ball.
Absol in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)