Weak toFlying ×2.56PoisonFirePsychicIceFairy ×1.6

Attacker	Type	Moveset	DPS
Enamorus	FairyFlying	Fairy WindFly	39.6
Yveltal	DarkFlying	GustOblivion WingLegacy	39.2
Toucannon	NormalFlying	PeckBeak BlastLegacy	38.8
Moltres	FireFlying	Wing AttackFly	38.6
Staraptor	NormalFlying	GustFlyLegacy	38.0
Rayquaza	DragonFlying	Air SlashHurricaneLegacy	35.6
Honchkrow	DarkFlying	PeckBrave Bird	34.7
Braviary	NormalFlying	Air SlashFly	34.6
Salamence	DragonFlying	Fire FangFly	34.6
Flamigo	FlyingFighting	Wing AttackBrave Bird	33.8
Tornadus	Flying	Air SlashHurricane	33.5
Blacephalon	FireGhost	IncinerateMind BlownLegacy	33.2

Windy boosts the Flying attacks above. Clear and Overcast boost Chesnaught.

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

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

Questions people ask

What is Chesnaught weak to in Pokémon GO?

Chesnaught takes 2.56 times damage from Flying, and 1.6 times from Poison, Fire, Psychic, Ice and Fairy.

What's the best counter to Chesnaught?

Enamorus with Fairy Wind and Fly, worth 39.6 damage per second against Chesnaught's own defense. The full ranking is above.