What are Groudon's weaknesses?

Answer 1

Since Groudon is a ground type go for a Ice-type or Grass-type move. Yes, I know that Ground-types are also weak to Water-type moves, but since Groudon has a Drought ability, Water is not as effective because of the sunlight. However since the drought ability boosts the effect of grass type move. In this case, use a special attack move (Groudon is slightly weak to sp. attack) like Solarbeam. This will do massive damage. Another hard-hitting move is Blizzard, an Ice-type sp. attack move. If you want to catch it, I would use a Physical Attack Water-type moves like Aqua Tail. This will hopefully help you with that Legendary Pokemon!

Answer 2

Groudon is a Ground type and with the help of primal reversion, it can evolve into Primal Groudon. Groudon's first appearance is in the games Ruby/Sapphire. It's a legendary pokémon, but still has his weaknesses. It's weak (2x) against: Grass, Ice and Water types and has immunity against the Electric type. It's also strong (resistant, 0.5x) against Poison and Rock types.Primal Groudon however is weak against: Water (4x) and Ground (2x) types, also immune against Electric and resistant (0.5x) to: Bug, Fairy, Fire, Poison and Steel types.