Weak toGroundRockWater ×1.6

Attacker	Type	Moveset	DPS
Inteleon	Water	Water GunHydro CannonLegacy	61.8
Kyogre	Water	WaterfallOrigin PulseLegacy	61.6
Glimmora	RockPoison	Rock ThrowMeteor Beam	60.8
Groudon	Ground	Mud ShotPrecipice BladesLegacy	60.4
Rampardos	Rock	Smack DownRock Slide	60.2
Kingler	Water	BubbleCrabhammer	58.5
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	58.3
Greninja	WaterDark	Water ShurikenHydro CannonLegacy	58.2
Gigalith	Rock	Lock OnMeteor BeamLegacy	57.8
Excadrill	GroundSteel	Mud SlapEarthquake	57.4
Rhyperior	GroundRock	Mud SlapRock WreckerLegacy	56.4
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	56.4

Rainy boosts the Water attacks above. Clear boosts Slugma.

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

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

Questions people ask

What is Slugma weak to in Pokémon GO?

Slugma takes 1.6 times from Ground, Rock and Water.

What's the best counter to Slugma?

Inteleon with Water Gun and Hydro Cannon, worth 61.8 damage per second against Slugma's own defense. The full ranking is above.