Weak toPoisonGrassElectric ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	32.8
Zeraora	Electric	Volt SwitchPlasma Fists	28.2
Kartana	GrassSteel	Razor LeafLeaf Blade	28.1
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	27.6
Xurkitree	Electric	Thunder ShockDischarge	27.2
Eternatus	PoisonDragon	Poison JabSludge Bomb	26.1
Naganadel	PoisonDragon	Poison JabSludge Bomb	24.8
Roserade	GrassPoison	Magical LeafLeaf Storm	24.0
Deoxys	Psychic	Charge BeamThunderbolt	23.7
Electivire	Electric	Thunder ShockWild Charge	23.6
Nihilego	RockPoison	Poison JabSludge Bomb	23.6
Zarude	DarkGrass	Vine WhipPower Whip	23.5

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

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

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

Questions people ask

What is Primarina weak to in Pokémon GO?

Primarina takes 1.6 times from Poison, Grass and Electric.

What's the best counter to Primarina?

Regieleki with Lock On and Thunder Cage, worth 32.8 damage per second against Primarina's own defense. The full ranking is above.