Weak toFightingGroundSteelWaterGrass ×1.6

Attacker	Type	Moveset	DPS
Lucario	FightingSteel	Force PalmAura SphereLegacy	28.6
Kartana	GrassSteel	Razor LeafLeaf Blade	27.3
Pheromosa	BugFighting	Low KickFocus Blast	26.1
Terrakion	RockFighting	Double KickSacred SwordLegacy	26.0
Blaziken	FireFighting	CounterAura Sphere	25.8
Metagross	SteelPsychic	Bullet PunchMeteor MashLegacy	25.0
Inteleon	Water	Water GunHydro CannonLegacy	24.6
Kyogre	Water	WaterfallOrigin PulseLegacy	24.5
Breloom	GrassFighting	Force PalmGrass KnotLegacy	24.5
Tinkaton	FairySteel	Fairy WindGigaton HammerLegacy	24.3
Groudon	Ground	Mud ShotPrecipice BladesLegacy	24.1
Conkeldurr	Fighting	Force PalmFocus Blast	23.8

Overcast boosts the Fighting attacks above. Partly cloudy boosts Gigalith.

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

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

Questions people ask

What is Gigalith weak to in Pokémon GO?

Gigalith takes 1.6 times from Fighting, Ground, Steel, Water and Grass.

What's the best counter to Gigalith?

Lucario with Force Palm and Aura Sphere, worth 28.6 damage per second against Gigalith's own defense. The full ranking is above.