This is my idea of a good moveset for Kingdra it is Surf, Dragon Dance/Agility, Draco Meteor, and Hydro Pump. I would suggest teaching it agility instead of dragon dance because it doesnt know any physical moves with this and dragon dance boosts speed and attack.
Chat with our AI personalities
Kingdra is weak against dragon type moves.
See, electric type moves are effective against water Pokemon. Thunder or Thunderbolt are powerful attacks very effective against water Pokemon such as kingdra. ACTUALLY, since Kingdra is a dragon type too, electric type moves are just normally effective. Dragon type is super effective against Kingdra. But then Kingdra would be supereffective against you too!
Normally kingdra would be the best in this situation.
Dragon Type's And Ice Moves Like Dragonite Garchomp etc.
It's only proper weakness is dragon type moves