Weak toGhostGrassElectricDark ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	34.8
Zeraora	Electric	Volt SwitchPlasma Fists	30.7
Kartana	GrassSteel	Razor LeafLeaf Blade	30.6
Blacephalon	FireGhost	AstonishShadow Ball	30.4
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	30.0
Xurkitree	Electric	Thunder ShockDischarge	29.6
Darkrai	Dark	SnarlShadow Ball	27.4
Chandelure	GhostFire	HexShadow Ball	27.2
Gengar	GhostPoison	LickShadow BallLegacy	27.1
Absol	Dark	SnarlBrutal SwingLegacy	26.6
Roserade	GrassPoison	Magical LeafLeaf Storm	26.1
Dragapult	DragonGhost	AstonishShadow Ball	25.9

Rainy boosts the Electric attacks above. Fog and Rainy boost Jellicent.

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

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

Questions people ask

What is Jellicent weak to in Pokémon GO?

Jellicent takes 1.6 times from Ghost, Grass, Electric and Dark.

What's the best counter to Jellicent?

Regieleki with Lock On and Thunder Cage, worth 34.8 damage per second against Jellicent's own defense. The full ranking is above.