Dry Skin — Pokémon Ability

Causes 1/8 max HP in damage each turn during strong sunlight, but heals for 1/8 max HP during rain. Increases damage from Fire moves to 1.25×, but absorbs Water moves, healing for 1/4 max HP.

Effect notes

This Pokémon takes 1/8 of its maximum HP in damage after each turn during strong sunlight, but it heals for 1/8 of its HP each turn during rain. This Pokémon takes 1.25× as much damage from Fire-type moves, but whenever a Water move hits it, it heals for 1/4 its maximum HP instead.

In-game descriptions by version

diamond pearlReduces HP if it is hot. Water restores HP.
platinumReduces HP if it is hot. Water restores HP.
heartgold soulsilverReduces HP if it is hot. Water restores HP.
black whiteReduces HP if it is hot. Water restores HP.
black 2 white 2Reduces HP if it is hot. Water restores HP.
x yReduces HP if it’s hot. Water restores HP.
omega ruby alpha sapphireReduces HP if it’s hot. Water restores HP.
sun moonRestores HP in rain or when hit by Water-type moves. Reduces HP in sunshine, and increases the damage received from Fire-type moves.
ultra sun ultra moonRestores HP in rain or when hit by Water-type moves. Reduces HP in harsh sunlight, and increases the damage received from Fire-type moves.
lets go pikachu lets go eeveeRestores HP in rain or when hit by Water-type moves. Reduces HP in harsh sunlight, and increases the damage received from Fire-type moves.
sword shieldRestores HP in rain or when hit by Water-type moves. Reduces HP in harsh sunlight, and increases the damage received from Fire-type moves.
scarlet violetRestores the Pokémon's HP in rain or when it is hit by Water-type moves. Reduces HP in harsh sunlight, and increases the damage received from Fire-type moves.

Pokémon with this ability