Weak toGrassElectric ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	52.6
Zeraora	Electric	Volt SwitchPlasma Fists	45.2
Kartana	GrassSteel	Razor LeafLeaf Blade	45.1
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	44.2
Xurkitree	Electric	Thunder ShockDischarge	43.6
Roserade	GrassPoison	Magical LeafLeaf Storm	38.4
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	38.2
Deoxys	Psychic	Charge BeamThunderbolt	38.0
Electivire	Electric	Thunder ShockWild Charge	37.8
Zarude	DarkGrass	Vine WhipPower Whip	37.7
Rillaboom	Grass	Razor LeafFrenzy PlantLegacy	37.2
Raikou	Electric	Volt SwitchWild Charge	36.8

Rainy boosts the Electric attacks above. Rainy boosts Dewott.

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

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

Questions people ask

What is Dewott weak to in Pokémon GO?

Dewott takes 1.6 times from Grass and Electric.

What's the best counter to Dewott?

Regieleki with Lock On and Thunder Cage, worth 52.6 damage per second against Dewott's own defense. The full ranking is above.