Castform in Pokémon GO
By Matt · Updated Quick answer
Castform is Normal type, so it's weak to Fighting.
What is Castform weak to?
Castform is Normal type, so it takes extra damage from Fighting attacks.
Defending Castform 
Normal
Normal Hits it hard
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Fighting160% damage 1.6×
Bounces off
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Ghost39.1% damage
Leave Ghost attackers at home: Castform resists them, and Ghost barely scratches it.
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FAQ
What is Castform weak to in Pokémon GO?
Castform is Normal type. It's weak to Fighting. It resists Ghost.
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