Weak toGrassElectric ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	50.7
Zeraora	Electric	Volt SwitchPlasma Fists	43.5
Kartana	GrassSteel	Razor LeafLeaf Blade	43.4
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	42.5
Xurkitree	Electric	Thunder ShockDischarge	42.0
Roserade	GrassPoison	Magical LeafLeaf Storm	37.0
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	36.8
Deoxys	Psychic	Charge BeamThunderbolt	36.6
Electivire	Electric	Thunder ShockWild Charge	36.4
Zarude	DarkGrass	Vine WhipPower Whip	36.3
Rillaboom	Grass	Razor LeafFrenzy PlantLegacy	35.9
Raikou	Electric	Volt SwitchWild Charge	35.4

Rainy boosts the Electric attacks above. Rainy boosts Squirtle.

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

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

Questions people ask

What is Squirtle weak to in Pokémon GO?

Squirtle takes 1.6 times from Grass and Electric.

What's the best counter to Squirtle?

Regieleki with Lock On and Thunder Cage, worth 50.7 damage per second against Squirtle's own defense. The full ranking is above.