Weak toRockElectricIce ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	38.5
Zeraora	Electric	Volt SwitchPlasma Fists	33.1
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	32.3
Xurkitree	Electric	Thunder ShockDischarge	31.9
Glimmora	RockPoison	Rock ThrowMeteor Beam	29.2
Rampardos	Rock	Smack DownRock Slide	28.9
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	28.0
Deoxys	Psychic	Charge BeamThunderbolt	27.8
Gigalith	Rock	Lock OnMeteor BeamLegacy	27.8
Electivire	Electric	Thunder ShockWild Charge	27.6
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	27.1
Raikou	Electric	Volt SwitchWild Charge	26.9

Rainy boosts the Electric attacks above. Windy boosts Tornadus.

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

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

Questions people ask

What is Tornadus weak to in Pokémon GO?

Tornadus takes 1.6 times from Rock, Electric and Ice.

What's the best counter to Tornadus?

Regieleki with Lock On and Thunder Cage, worth 38.5 damage per second against Tornadus's own defense. The full ranking is above.