Weak toPoisonGrassElectric ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	41.3
Zeraora	Electric	Volt SwitchPlasma Fists	35.5
Kartana	GrassSteel	Razor LeafLeaf Blade	35.4
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	34.6
Xurkitree	Electric	Thunder ShockDischarge	34.2
Eternatus	PoisonDragon	Poison JabSludge Bomb	32.9
Naganadel	PoisonDragon	Poison JabSludge Bomb	31.2
Roserade	GrassPoison	Magical LeafLeaf Storm	30.1
Deoxys	Psychic	Charge BeamThunderbolt	29.8
Electivire	Electric	Thunder ShockWild Charge	29.6
Nihilego	RockPoison	Poison JabSludge Bomb	29.6
Zarude	DarkGrass	Vine WhipPower Whip	29.6

Rainy boosts the Electric attacks above. Overcast and Rainy boost Azumarill.

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

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

Questions people ask

What is Azumarill weak to in Pokémon GO?

Azumarill takes 1.6 times from Poison, Grass and Electric.

What's the best counter to Azumarill?

Regieleki with Lock On and Thunder Cage, worth 41.3 damage per second against Azumarill's own defense. The full ranking is above.