Restores HP in rain or when hit by Water-type moves. Reduces HP in sunshine, and increases the damage received from Fire-type moves.SM Restores HP in rain or when hit by Water-type moves. Reduces HP in harsh sunlight, and increases the damage received from Fire-type moves.USUM
During harsh sunlight, a Pokémon with Dry Skin will lose ⅛ of its maximum HP at the end of each turn. During rain, a Pokémon with Dry Skin will regain ⅛ of its maximum HP at the end of each turn.
Fire-type attacks do 25% more damage to a Pokémon with Dry Skin.
When a Pokémon with Dry Skin is hit by a Water-typemove, its HP is restored by one quarter of its maximum HP, and the move will have no effect on that Pokémon (if a Pokémon with this Ability already has full HP, the Water-type move will do nothing). This effect will not activate if the Pokémon is protected from the Water-type move. Multi-strike moves, such as Water Shuriken, will only activate this effect once.
If a Pokémon with Dry Skin is holding an Absorb Bulb or Luminous Moss, Dry Skin absorbs the Water-type move so the item's effect is not triggered.
In Sunny weather, Pokémon with Dry Skin will lose HP, while their natural HP recovery rate is boosted in Rain. Natural HP recovery rate is unaffected in Sunny weather. Pokémon will also gain HP when hit by a Water-type move, but will get extra damage from Fire-type moves.
In Explorers of Time, Darkness and Sky, Pokémon with Dry Skin lose 3 HP every 9-10 turns in Sunny weather. In Pokémon Super Mystery Dungeon, Dry Skin causes the Pokémon to lose 1 HP every 10 turns in Sunny weather, and Fire-type moves do 1.2x damage to the Pokémon. When hit by a Water-type move, the Pokémon gains 20 HP. Additionally, in rain, the natural HP recovery rate doubles from 0.5% (of the maximum HP) per turn to 1% per turn.
Water-type moves and Rain restore its HP. Fire-type moves and Sunny weather damage it.* If it is hit with a Water-type move or the weather condition is Rain, the Pokémon's HP is restored! But if the weather condition is Sunny, it will gradually take damage. Fire-type moves do more damage!*