Weak toGrassElectric ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	54.3
Zeraora	Electric	Volt SwitchPlasma Fists	46.6
Kartana	GrassSteel	Razor LeafLeaf Blade	46.5
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	45.6
Xurkitree	Electric	Thunder ShockDischarge	45.0
Roserade	GrassPoison	Magical LeafLeaf Storm	39.6
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	39.5
Deoxys	Psychic	Charge BeamThunderbolt	39.2
Electivire	Electric	Thunder ShockWild Charge	39.0
Zarude	DarkGrass	Vine WhipPower Whip	38.9
Rillaboom	Grass	Razor LeafFrenzy PlantLegacy	38.4
Raikou	Electric	Volt SwitchWild Charge	37.9

Rainy boosts the Electric attacks above. Rainy boosts Staryu.

Level 40, 15 attack IV, costed against Staryu's own defense and typing, one per evolution family.

Staryu's moveset, CP and shiny All counters Raid board

Questions people ask

What is Staryu weak to in Pokémon GO?

Staryu takes 1.6 times from Grass and Electric.

What's the best counter to Staryu?

Regieleki with Lock On and Thunder Cage, worth 54.3 damage per second against Staryu's own defense. The full ranking is above.