Weak toFlyingPsychicFairy ×1.6

Attacker	Type	Moveset	DPS
Mewtwo	Psychic	ConfusionPsystrikeLegacy	29.6
Enamorus	FairyFlying	Fairy WindFly	28.6
Tapu Lele	PsychicFairy	ConfusionNatures MadnessLegacy	26.6
Yveltal	DarkFlying	GustOblivion WingLegacy	25.3
Alakazam	Psychic	ConfusionPsychicLegacy	25.2
Toucannon	NormalFlying	PeckBeak BlastLegacy	25.0
Moltres	FireFlying	Wing AttackFly	24.9
Staraptor	NormalFlying	GustFlyLegacy	24.6
Azelf	Psychic	ConfusionFuturesight	24.5
Hoopa	PsychicGhost	ConfusionPsychic	24.4
Espeon	Psychic	ConfusionPsychic	24.4
Regigigas	Normal	Zen HeadbuttCrush GripLegacy	24.3

Windy boosts the Psychic attacks above. Overcast boosts Hitmonchan.

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

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

Questions people ask

What is Hitmonchan weak to in Pokémon GO?

Hitmonchan takes 1.6 times from Flying, Psychic and Fairy.

What's the best counter to Hitmonchan?

Mewtwo with Confusion and Psystrike, worth 29.6 damage per second against Hitmonchan's own defense. The full ranking is above.