From Bulbapedia, the community-driven Pokémon encyclopedia.
Hydration (Japanese: うるおいボディ Wet Body) is an ability introduced in Generation IV. Four Pokémon have this ability, all of which are Template:Type2.
Hydration cures any status ailment that the Pokémon with this ability has when it is raining, even self inflicted status such as from using Rest.
Outside of battle
Hydration has no effect outside of battle.
Pokémon with Hydration