Weak toGround ×1.6

Attacker	Type	Moveset	DPS
Groudon	Ground	Mud ShotPrecipice BladesLegacy	26.4
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	25.4
Excadrill	GroundSteel	Mud SlapEarthquake	25.0
Mamoswine	IceGround	Mud SlapHigh Horsepower	24.6
Regigigas	Normal	Hidden PowerCrush GripLegacy	23.8
Rhyperior	GroundRock	Mud SlapEarthquake	23.7
Garchomp	DragonGround	Mud ShotEarthquake	23.5
Landorus	GroundFlying	Mud ShotEarth Power	23.4
Blacephalon	FireGhost	IncinerateMind BlownLegacy	23.1
Krookodile	GroundDark	Mud SlapEarthquake	22.6
Golurk	GroundGhost	Mud SlapEarth Power	21.6
Golem	RockGround	Mud SlapEarthquake	21.0

Clear boosts the Ground attacks above. Rainy boosts Jolteon.

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

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

Questions people ask

What is Jolteon weak to in Pokémon GO?

Jolteon takes 1.6 times from Ground.

What's the best counter to Jolteon?

Groudon with Mud Shot and Precipice Blades, worth 26.4 damage per second against Jolteon's own defense. The full ranking is above.