Weak toBugDark ×1.6

Attacker	Type	Moveset	DPS
Pheromosa	BugFighting	Bug BiteBug Buzz	23.6
Darkrai	Dark	SnarlDark Pulse	21.4
Absol	Dark	SnarlBrutal SwingLegacy	21.4
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	20.9
Zoroark	Dark	SnarlFoul Play	20.4
Chi-Yu	DarkFire	SnarlDark Pulse	20.3
Hydreigon	DarkDragon	BiteBrutal SwingLegacy	20.3
Volcarona	BugFire	Bug BiteBug Buzz	19.9
Tyranitar	RockDark	BiteBrutal Swing	19.9
Weavile	DarkIce	SnarlFoul Play	19.8
Chien-Pao	DarkIce	SnarlDark Pulse	19.7
Regigigas	Normal	Hidden PowerCrush GripLegacy	19.5

Fog boosts the Dark attacks above. Partly cloudy and Windy boost Meloetta.

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

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

Questions people ask

What is Meloetta weak to in Pokémon GO?

Meloetta takes 1.6 times from Bug and Dark.

What's the best counter to Meloetta?

Pheromosa with Bug Bite and Bug Buzz, worth 23.6 damage per second against Meloetta's own defense. The full ranking is above.