Weak toRockFire ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	IncinerateMind BlownLegacy	41.3
Reshiram	DragonFire	Fire FangFusion FlareLegacy	34.3
Chandelure	GhostFire	Fire SpinOverheat	31.4
Cinderace	Fire	Fire SpinPyroball	31.0
Volcarona	BugFire	Fire SpinOverheat	30.7
Darmanitan	Fire	Fire FangOverheat	30.6
Glimmora	RockPoison	Rock ThrowMeteor Beam	29.7
Blaziken	FireFighting	Fire SpinBlast BurnLegacy	29.5
Rampardos	Rock	Smack DownRock Slide	29.4
Moltres	FireFlying	Fire SpinOverheat	29.2
Volcanion	FireWater	IncinerateOverheat	28.9
Heatran	FireSteel	Fire SpinMagma StormLegacy	28.9

Clear boosts the Fire attacks above. Rainy boosts Charjabug.

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

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

Questions people ask

What is Charjabug weak to in Pokémon GO?

Charjabug takes 1.6 times from Rock and Fire.

What's the best counter to Charjabug?

Blacephalon with Incinerate and Mind Blown, worth 41.3 damage per second against Charjabug's own defense. The full ranking is above.