Weak toRock ×2.56SteelFireElectric ×1.6

Attacker	Type	Moveset	DPS
Glimmora	RockPoison	Rock ThrowMeteor Beam	79.7
Rampardos	Rock	Smack DownRock Slide	78.9
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	73.8
Gigalith	Rock	Lock OnMeteor BeamLegacy	73.8
Rhyperior	GroundRock	Smack DownRock WreckerLegacy	71.4
Terrakion	RockFighting	Smack DownRock Slide	70.0
Blacephalon	FireGhost	IncinerateMind BlownLegacy	69.3
Tyranitar	RockDark	Smack DownStone EdgeLegacy	67.4
Regieleki	Electric	Lock OnThunder CageLegacy	65.7
Lycanroc	Rock	Rock ThrowStone Edge	64.2
Aggron	SteelRock	Smack DownMeteor Beam	62.3
Aerodactyl	RockFlying	Rock ThrowRock Slide	61.6

Partly cloudy boosts the Rock attacks above. Snow and Windy boost Delibird.

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

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

Questions people ask

What is Delibird weak to in Pokémon GO?

Delibird takes 2.56 times damage from Rock, and 1.6 times from Steel, Fire and Electric.

What's the best counter to Delibird?

Glimmora with Rock Throw and Meteor Beam, worth 79.7 damage per second against Delibird's own defense. The full ranking is above.