Jynx punches above its weight class thanks to Dry Skin. It heals from Water moves but takes extra Fire damage, which is enough to make up for stats that don't impress on their own. Its typing leaves 6 weaknesses to cover, which limits where it can switch in safely.
Sp. Atk leads and Defense gets almost nothing. That's Jynx's stat line in a nutshell. 3 stats sit in respectable range, but the spread is brutal. Tough to catch and yields 2 Sp. Atk EVs.
Appears to move to a rhythm of its own, as if it were dancing. It wiggles its hips as it walks.
Jynx Weakness
FragileJynx is weak to Fire, Bug, Rock, Ghost, Dark, and Steel-type moves. Dry Skin grants an additional Water immunity, reshaping the matchup chart. Jynx's special bulk (base 95 Sp.Def) helps absorb special-type weaknesses, though physical moves exploit the lower Defense.
Evolved from Smoochum. Jynx is the final form in this two-stage line. No compatible partners for breeding via one egg group. Eggs are average hatch time. Sp.Atk grew the most through evolution (+30 over Smoochum), and Jynx peaks at 455 total stats.
How to Evolve
Breed with Jynx to get Smoochum eggs (with patience) from the Humanshape egg group.
For a special attacker, Jynx wants max Sp. Atk and Speed EVs and Iciumz. The Timid nature tilts toward fast special duty, and Dryskin contributes without taking a move slot.
Best Build
Let's Go Pikachu & Eevee uses different battle mechanics.
Competitive build content is not applicable for this game. Select a main series game for builds.
TMs carry this one. Jynx learns Blizzard and Dream Eater naturally for STAB, but the offensive range comes almost entirely from technical machines. Normal and Ghost and beyond give it real matchup play.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Grab Jynx from the locations below, it shows up in the wild. Drop it at the nursery to hatch Smoochum. From there, level the baby through the remaining stages to Jynx.
Where To Catch Jynx in Let's Go Pikachu & Eevee
Smoochum is your first catch on the way to Jynx. You'll find walking encounters from Lv. 39-44 across 6 total spots in the chain.
Step 1Breed Smoochum from JynxBreed from Jynx at the Day Care.
Step 2Jynx ✓MODERATESeafoam Islands - Area 1Let's Go EeveeGrassLv.39-4414%LateWaterMODERATESeafoam Islands - Area 1Let's Go PikachuGrassLv.39-4414%LateWaterMODERATESeafoam Islands - Area 2Let's Go EeveeGrassLv.39-4414%LateWaterMODERATESeafoam Islands - Area 2Let's Go PikachuGrassLv.39-4414%LateWaterMODERATESeafoam Islands - Area 3Let's Go PikachuGrassLv.39-4414%LateWaterMODERATESeafoam Islands - Area 3Let's Go EeveeGrassLv.39-4414%LateWateror evolve from Smoochum (Step 1)
Dry Skin changes the entire equation for Jynx. The 455 BST doesn't tell the full story. Ranked C-Tier as a wallbreaker.
Smoochum evolves into Jynx at level 30. Jynx is the fully evolved form. It sits at 455 BST in its evolved form.
Dry Skin is what you want on Jynx. Every competitive set worth running is built with that ability in mind. The alternatives (Oblivious, Forewarn) work on paper but Dry Skin is what makes Jynx worth using.
Base 95 Speed is workable — faster than some, slower than many. On offense, Jynx is a special attacker with base 115 Sp. Atk. Best used as a wallbreaker.
Jynx appears in 19 games, including Yellow, Red & Blue, and Gold & Silver.
One of the original 151, Jynx has appeared in 19 games — most mainline games. From Red & Blue through the latest titles, it's rarely been left out of a regional Pokedex.
- Gen IY
Yellow - Gen IRBDebut

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRS

Ruby & Sapphire - Gen IIIFRLG

FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS

HeartGold & SoulSilver - Gen IVDP

Diamond & Pearl - Gen VBW

Black & White - Gen VB2W2

Black 2 & White 2 - Gen VIXY

X & Y - Gen VIORAS

Omega Ruby & Alpha Sapphire - Gen VIIUSUM

Ultra Sun & Ultra Moon - Gen VIISM

Sun & Moon - Gen VIILGPE

Let's Go Pikachu & Eevee - Gen VIIISwSh

Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A