Weak toGroundGhostDark ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	AstonishShadow Ball	30.1
Darkrai	Dark	SnarlShadow Ball	27.1
Chandelure	GhostFire	HexShadow Ball	26.9
Gengar	GhostPoison	LickShadow BallLegacy	26.9
Groudon	Ground	Mud ShotPrecipice BladesLegacy	26.6
Absol	Dark	SnarlBrutal SwingLegacy	26.3
Dragapult	DragonGhost	AstonishShadow Ball	25.6
Excadrill	GroundSteel	Mud SlapEarthquake	25.3
Hoopa	PsychicGhost	AstonishShadow Ball	25.2
Lunala	PsychicGhost	Shadow ClawShadow Ball	25.1
Eternatus	PoisonDragon	Dragon TailDynamax CannonLegacy	25.1
Gholdengo	SteelGhost	HexShadow Ball	25.1

Fog boosts the Ghost attacks above. Overcast and Windy boost Galarian Slowking.

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

Galarian Slowking's moveset, stats and CP All counters Raid board

Questions people ask

What is Galarian Slowking weak to in Pokémon GO?

Galarian Slowking takes 1.6 times from Ground, Ghost and Dark.

What's the best counter to Galarian Slowking?

Blacephalon with Astonish and Shadow Ball, worth 30.1 damage per second against Galarian Slowking's own defense. The full ranking is above.