Weak toFlyingGroundWaterPsychic ×1.6

Attacker	Type	Moveset	DPS
Mewtwo	Psychic	ConfusionPsystrikeLegacy	52.2
Enamorus	FairyFlying	Fairy WindFly	45.2
Yveltal	DarkFlying	GustOblivion WingLegacy	44.7
Alakazam	Psychic	ConfusionPsychicLegacy	44.6
Inteleon	Water	Water GunHydro CannonLegacy	44.3
Toucannon	NormalFlying	PeckBeak BlastLegacy	44.2
Kyogre	Water	WaterfallOrigin PulseLegacy	44.2
Moltres	FireFlying	Wing AttackFly	44.0
Staraptor	NormalFlying	GustFlyLegacy	43.4
Groudon	Ground	Mud ShotPrecipice BladesLegacy	43.3
Azelf	Psychic	ConfusionFuturesight	43.3
Hoopa	PsychicGhost	ConfusionPsychic	43.0

Windy boosts the Psychic attacks above. Clear and Overcast boost Monferno.

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

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

Questions people ask

What is Monferno weak to in Pokémon GO?

Monferno takes 1.6 times from Flying, Ground, Water and Psychic.

What's the best counter to Monferno?

Mewtwo with Confusion and Psystrike, worth 52.2 damage per second against Monferno's own defense. The full ranking is above.