Weak toRock ×2.56FlyingFireElectricIce ×1.6

Attacker	Type	Moveset	DPS
Glimmora	RockPoison	Rock ThrowMeteor Beam	65.8
Rampardos	Rock	Smack DownRock Slide	65.3
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	61.1
Gigalith	Rock	Lock OnMeteor BeamLegacy	61.0
Rhyperior	GroundRock	Smack DownRock WreckerLegacy	59.0
Terrakion	RockFighting	Smack DownRock Slide	57.9
Blacephalon	FireGhost	IncinerateMind BlownLegacy	57.3
Tyranitar	RockDark	Smack DownStone EdgeLegacy	55.7
Regieleki	Electric	Lock OnThunder CageLegacy	54.3
Lycanroc	Rock	Rock ThrowStone Edge	53.1
Aggron	SteelRock	Smack DownMeteor Beam	51.5
Aerodactyl	RockFlying	Rock ThrowRock Slide	51.0

Partly cloudy boosts the Rock attacks above. Rainy and Windy boost Ninjask.

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

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

Questions people ask

What is Ninjask weak to in Pokémon GO?

Ninjask takes 2.56 times damage from Rock, and 1.6 times from Flying, Fire, Electric and Ice.

What's the best counter to Ninjask?

Glimmora with Rock Throw and Meteor Beam, worth 65.8 damage per second against Ninjask's own defense. The full ranking is above.