Weak toGhostDark ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	AstonishShadow Ball	36.5
Darkrai	Dark	SnarlShadow Ball	32.8
Chandelure	GhostFire	HexShadow Ball	32.6
Gengar	GhostPoison	LickShadow BallLegacy	32.5
Absol	Dark	SnarlBrutal SwingLegacy	31.9
Dragapult	DragonGhost	AstonishShadow Ball	31.1
Hoopa	PsychicGhost	AstonishShadow Ball	30.5
Lunala	PsychicGhost	Shadow ClawShadow Ball	30.5
Eternatus	PoisonDragon	Dragon TailDynamax CannonLegacy	30.4
Gholdengo	SteelGhost	HexShadow Ball	30.4
Zoroark	Dark	SnarlFoul Play	30.4
Chi-Yu	DarkFire	SnarlDark Pulse	30.2

Fog boosts the Ghost attacks above. Fog boosts Spectrier.

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

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

Questions people ask

What is Spectrier weak to in Pokémon GO?

Spectrier takes 1.6 times from Ghost and Dark.

What's the best counter to Spectrier?

Blacephalon with Astonish and Shadow Ball, worth 36.5 damage per second against Spectrier's own defense. The full ranking is above.