Pokémon-specific weakness guide
Rainy Castform Weaknesses and Counters
This guide explains Rainy Castform's defensive profile, including every weakness, resistance, immunity, and practical counter type based on its Water typing.

Rainy Castform
#0351
Resistances (4)
Immunities (0)
Battle notes
- Rainy Castform's Water typing is best attacked with Electric (2x), Grass (2x). Start with those attacking types when choosing moves or counter Pokémon.
- Avoid relying on common Fire, Water, Ice attacks unless they have unusually high power or a secondary purpose, because Rainy Castform resists or ignores those matchups.
- This guide uses the modern Gen 6+ type chart only. Abilities, held items, Terastallization, weather, fields, and special move rules can still change real battle outcomes.
Best counter types
These attacking types hit the defender for super-effective damage under the modern Gen 6+ type chart.
Example Pokémon counters
Defensive typing summary
Rainy Castform's base defensive typing is Water. The weakness chart multiplies both types when a Pokémon has two types, so a matchup can become 4x, 2x, 1x, 0.5x, 0.25x, or 0x.
Related guides
FAQ
What is Rainy Castform weak to?
Rainy Castform is weak to Electric (2x), Grass (2x).
Which attacking types are most practical against Rainy Castform?
Electric is the strongest listed attacking type against Rainy Castform at 2x damage. Use the example counter Pokémon section for practical users of that type.
Does Rainy Castform's ability change these weaknesses?
This page uses base defensive typing only. Abilities, held items, Terastallization, weather, fields, and special move rules can change actual battle outcomes.