Weak toPoison ×2.56FlyingSteelFireIce ×1.6

Attacker	Type	Moveset	DPS
Eternatus	PoisonDragon	Poison JabSludge Bomb	69.7
Naganadel	PoisonDragon	Poison JabSludge Bomb	66.1
Nihilego	RockPoison	Poison JabSludge Bomb	62.8
Roserade	GrassPoison	Poison JabSludge Bomb	61.4
Munkidori	PoisonPsychic	Poison JabSludge Bomb	60.2
Revavroom	SteelPoison	Poison JabGunk Shot	57.9
Blacephalon	FireGhost	IncinerateMind BlownLegacy	57.8
Overqwil	DarkPoison	Poison JabSludge Bomb	56.4
Okidogi	PoisonFighting	Poison JabSludge Bomb	55.9
Toxicroak	PoisonFighting	Poison JabSludge Bomb	53.8
Salazzle	PoisonFire	Poison JabSludge Wave	52.4
Scolipede	BugPoison	Poison JabSludge Bomb	51.9

Overcast boosts the Poison attacks above. Clear and Overcast boost Cottonee.

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

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

Questions people ask

What is Cottonee weak to in Pokémon GO?

Cottonee takes 2.56 times damage from Poison, and 1.6 times from Flying, Steel, Fire and Ice.

What's the best counter to Cottonee?

Eternatus with Poison Jab and Sludge Bomb, worth 69.7 damage per second against Cottonee's own defense. The full ranking is above.