Weak toGroundBugGhostSteelWaterGrassDark ×1.6

Attacker	Type	Moveset	DPS
Kartana	GrassSteel	Fury CutterLeaf Blade	35.5
Blacephalon	FireGhost	AstonishShadow Ball	35.0
Pheromosa	BugFighting	Bug BiteBug Buzz	33.7
Metagross	SteelPsychic	Fury CutterMeteor MashLegacy	33.4
Inteleon	Water	Water GunHydro CannonLegacy	31.7
Kyogre	Water	WaterfallOrigin PulseLegacy	31.5
Darkrai	Dark	SnarlShadow Ball	31.5
Chandelure	GhostFire	HexShadow Ball	31.2
Tinkaton	FairySteel	Fairy WindGigaton HammerLegacy	31.2
Gengar	GhostPoison	LickShadow BallLegacy	31.2
Groudon	Ground	Mud ShotPrecipice BladesLegacy	30.9
Absol	Dark	SnarlBrutal SwingLegacy	30.5

Rainy boosts the Bug attacks above. Partly cloudy and Windy boost Lunatone.

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

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

Questions people ask

What is Lunatone weak to in Pokémon GO?

Lunatone takes 1.6 times from Ground, Bug, Ghost, Steel, Water, Grass and Dark.

What's the best counter to Lunatone?

Kartana with Fury Cutter and Leaf Blade, worth 35.5 damage per second against Lunatone's own defense. The full ranking is above.