Weak toFlyingRockElectric ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	52.2
Zeraora	Electric	Volt SwitchPlasma Fists	44.9
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	43.8
Xurkitree	Electric	Thunder ShockDischarge	43.3
Enamorus	FairyFlying	Fairy WindFly	41.1
Yveltal	DarkFlying	GustOblivion WingLegacy	40.6
Toucannon	NormalFlying	PeckBeak BlastLegacy	40.2
Moltres	FireFlying	Wing AttackFly	40.0
Glimmora	RockPoison	Rock ThrowMeteor Beam	39.6
Staraptor	NormalFlying	GustFlyLegacy	39.5
Rampardos	Rock	Smack DownRock Slide	39.2
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	38.0

Rainy boosts the Electric attacks above. Rainy boosts Dewpider.

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

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

Questions people ask

What is Dewpider weak to in Pokémon GO?

Dewpider takes 1.6 times from Flying, Rock and Electric.

What's the best counter to Dewpider?

Regieleki with Lock On and Thunder Cage, worth 52.2 damage per second against Dewpider's own defense. The full ranking is above.