Weak toGround ×2.56Fire ×1.6

Attacker	Type	Moveset	DPS
Groudon	Ground	Mud ShotPrecipice BladesLegacy	68.1
Excadrill	GroundSteel	Mud SlapEarthquake	64.7
Mamoswine	IceGround	Mud SlapHigh Horsepower	63.5
Rhyperior	GroundRock	Mud SlapEarthquake	61.3
Garchomp	DragonGround	Mud ShotEarthquake	60.7
Landorus	GroundFlying	Mud ShotEarth Power	60.4
Blacephalon	FireGhost	IncinerateMind BlownLegacy	59.6
Krookodile	GroundDark	Mud SlapEarthquake	58.5
Golurk	GroundGhost	Mud SlapEarth Power	55.7
Golem	RockGround	Mud SlapEarthquake	54.1
Torterra	GrassGround	Mud SlapEarthquake	52.0
Flygon	GroundDragon	Sand AttackEarthquake	51.3

Clear boosts the Ground attacks above. Overcast and Snow boost Varoom.

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

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

Questions people ask

What is Varoom weak to in Pokémon GO?

Varoom takes 2.56 times damage from Ground, and 1.6 times from Fire.

What's the best counter to Varoom?

Groudon with Mud Shot and Precipice Blades, worth 68.1 damage per second against Varoom's own defense. The full ranking is above.