Weak toRock ×2.56FlyingFireElectricIce ×1.6

Attacker	Type	Moveset	DPS
Glimmora	RockPoison	Rock ThrowMeteor Beam	76.7
Rampardos	Rock	Smack DownRock Slide	76.0
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	71.1
Gigalith	Rock	Lock OnMeteor BeamLegacy	71.1
Rhyperior	GroundRock	Smack DownRock WreckerLegacy	68.8
Terrakion	RockFighting	Smack DownRock Slide	67.5
Blacephalon	FireGhost	IncinerateMind BlownLegacy	66.8
Tyranitar	RockDark	Smack DownStone EdgeLegacy	64.9
Regieleki	Electric	Lock OnThunder CageLegacy	63.3
Lycanroc	Rock	Rock ThrowStone Edge	61.8
Aggron	SteelRock	Smack DownMeteor Beam	60.0
Aerodactyl	RockFlying	Rock ThrowRock Slide	59.4

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

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

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

Questions people ask

What is Yanma weak to in Pokémon GO?

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

What's the best counter to Yanma?

Glimmora with Rock Throw and Meteor Beam, worth 76.7 damage per second against Yanma's own defense. The full ranking is above.