Special
Balanced
70Speed · Below Avg

Is Castform Good in Ultra Sun & Ultra Moon Playthrough?

Normal-type that changes form with weather. AbilityForecast shifts its type to Fire, Water, or Ice. Interesting gimmick, but the base stats are too low to use the form changes effectively in boss fights.

StrongGoodEvenToughBadSEGEGETTEGGTEEEEIlimaTrial 1HalaKahuna 1LanaTrial 2KiaweTrial 3MallowTrial 4OliviaKahuna 2SophoclesTrial 5AcerolaTrial 6NanuKahuna 3MinaTrial 7HapuKahuna 4CastformCatchableMolayneE4OliviaE4AcerolaE4KahiliE4KukuiChamp*
Ilima
Trial 1
Strong

Castform resists most of Ilima's coverage and hits back hard.

You Win
Gumshoos
Lv 12
Normal
Stakeout
Super FangBiteLeerScary Face
Easy KO
Yungoos
Lv 10
Normal
Stakeout
LeerTacklePursuitOdor Sleuth
Hala
Kahuna 1
Even

Castform trades roughly evenly with Hala's team.

Even
Hariyama
Lv 63
Fighting
Thick Fat
Fake OutClose CombatKnock OffHeavy Slam
Even
Machamp
Lv 63
Fighting
Guts
Cross ChopThunder PunchIce PunchFire Punch
Even
Bewear
Lv 63
NormalFighting
Fluffy
Hammer ArmBrutal SwingDragon ClawShadow Claw
Even
Poliwrath
Lv 63
WaterFighting
Water AbsorbImmune to Water attacks
WaterfallBrick BreakPoison JabPayback
Even
Crabominable
Lv 63
FightingIce
Iron Fist
Ice HammerClose CombatStone EdgeEarthquake
Lana
Trial 2
Good

Castform has the type edge here and should clean up Lana's team.

You Win
Lanturn
Lv 60
WaterElectric
Volt AbsorbImmune to Electric attacks
DischargeHydro PumpThunder WaveIcy Wind
You Win
Cloyster
Lv 60
WaterIce
Skill Link
Spike CannonIcicle CrashSmart StrikeSpikes
You Win
Araquanid
Lv 60
WaterBug
Water Bubble
LiquidationLeech LifeCrunchFrost Breath
Kiawe
Trial 3
Even

Castform trades roughly evenly with Kiawe's team.

Risky
Alolan Marowak
Lv 22
FireGhost
Intimidate
HexFlame WheelBrick BreakDetect
You Win
Salazzle
Lv 20
PoisonFire
Corrosion
Poison GasVenoshockFlame BurstTorment
Mallow
Trial 4
Good

Castform has the type edge here and should clean up Mallow's team.

Even
Lurantis
Lv 24
Grass
Leaf Guard
Low SweepX ScissorSolar BladeSynthesis
You Win
Kecleon
Lv 22
Normal
Color Change
Sunny DayAncient PowerDizzy PunchScreech
Olivia
Kahuna 2
Even

Castform trades roughly evenly with Olivia's team.

Even
Anorith
Lv 27
RockBug
Battle Armor
Bug BiteSmack DownMetal Claw
Even
Lileep
Lv 27
RockGrass
Suction Cups
Giga DrainAncient PowerBrine
Even
Lycanroc
Lv 28
Rock
Vital Spirit
BiteRock Tomb
Sophocles
Trial 5
Tough

Sophocles's typing presses Castform's defenses.

Risky
Togedemaru
Lv 33
ElectricSteel
Iron Barbs
Zing ZapSpiky ShieldIron HeadBounce
Even
Skarmory
Lv 32
SteelFlying
Keen Eye
Stealth RockSteel WingTailwindTorment
Acerola
Trial 6
Tough

Acerola's typing presses Castform's defenses.

Risky
Mimikyu
Lv 35
GhostFairy
Disguise
Shadow ClawPlay RoughLeech LifeSlash
Even
Banette
Lv 32
Ghost
Insomnia
ScreechWill O WispFeint AttackCurse
Nanu
Kahuna 3
Even

Castform trades roughly evenly with Nanu's team.

Risky
Sableye
Lv 43
DarkGhost
Keen Eye
Power GemShadow BallFake Out
You Win
Krokorok
Lv 43
GroundDark
Intimidate
CrunchAssuranceSwaggerEarthquake
Even
Persian
Lv 44
Normal
Fur Coat
Power GemFake OutDark Pulse
Mina
Trial 7
Good

Castform has the type edge here and should clean up Mina's team.

Even
Ribombee
Lv 55
BugFairy
Shield Dust
Bug BuzzDraining KissQuiver DanceDazzling Gleam
Easy KO
Pelipper
Lv 52
WaterFlying
Keen Eye
StockpileScaldSpit UpSeed Bomb
Hapu
Kahuna 4
Good

Castform has the type edge here and should clean up Hapu's team.

Risky
Golurk
Lv 53
GroundGhost
No Guard
Hammer ArmEarthquakeShadow PunchStealth Rock
Easy KO
Gastrodon
Lv 53
WaterGround
Sticky Hold
Muddy WaterMud BombRecover
You Win
Flygon
Lv 53
GroundDragon
Levitate
Earth PowerDragon Breath
You Win
Mudsdale
Lv 54
Ground
Stamina
Heavy SlamEarthquakeDouble KickPayback
Molayne
Elite Four
Tough

Molayne's team hits Castform's weaknesses hard.

Risky
Klefki
Lv 56
SteelFairy
Prankster
SpikesThunder WaveFlash CannonReflect
Even
Bisharp
Lv 56
DarkSteel
Defiant
Night SlashIron HeadX ScissorMetal Sound
Risky
Magnezone
Lv 56
ElectricSteel
Sturdy
Flash CannonThunderboltTri AttackScreech
Risky
Metagross
Lv 56
SteelPsychic
Clear Body
Hammer ArmMeteor MashBullet PunchZen Headbutt
Risky
Alolan Dugtrio
Lv 57
GroundSteel
Tangling Hair
EarthquakeIron HeadSucker PunchFissure
Olivia
Elite Four
Even

Castform trades roughly evenly with Olivia's team.

Even
Armaldo
Lv 56
RockBug
Battle Armor
Crush ClawX ScissorRock Blast
Even
Cradily
Lv 56
RockGrass
Suction Cups
Rock TombEnergy BallStealth Rock
Even
Gigalith
Lv 56
Rock
Sand Stream
Stone EdgeBulldozeIron Head
Even
Probopass
Lv 56
RockSteel
Sturdy
Earth PowerPower GemThunder WaveSandstorm
Risky
Lycanroc
Lv 57
Rock
Keen Eye
CrunchStone EdgeCounterRock Climb
Acerola
Elite Four
Even

Castform trades roughly evenly with Acerola's team.

Even
Banette
Lv 56
Ghost
Insomnia
Shadow ClawFeint AttackInfestationScreech
Even
Drifblim
Lv 56
GhostFlying
Aftermath
Ominous WindFocus EnergyAmnesiaBaton Pass
Even
Dhelmise
Lv 56
GhostGrass
Steelworker
SlamShadow BallEnergy BallWhirlpool
Risky
Froslass
Lv 56
IceGhost
Snow Cloak
BlizzardShadow BallConfuse RayIce Shard
Risky
Palossand
Lv 57
GhostGround
Water Compaction
Shadow BallEarth PowerGiga DrainIron Defense
Kahili
Elite Four
Even

Castform trades roughly evenly with Kahili's team.

Even
Braviary
Lv 56
NormalFlying
Sheer Force
Crush ClawBrave BirdAir SlashScary Face
Even
Hawlucha
Lv 56
FightingFlying
Mold Breaker
Flying PressThroat ChopDual ChopPoison Jab
Even
Mandibuzz
Lv 56
DarkFlying
Big Pecks
Bone RushBrave BirdPunishmentFlatter
Even
Toucannon
Lv 57
NormalFlying
Skill Link
Bullet SeedRock BlastBeak BlastScreech
Kukui
Champion
Even

Castform trades roughly evenly with Kukui's team.

Even
Alolan Ninetales
Lv 68
IceFairy
Snow Cloak
Dazzling GleamBlizzardIce ShardSafeguard
Even
Braviary
Lv 68
NormalFlying
Keen Eye
Crush ClawBrave BirdWhirlwindTailwind
Risky
Magnezone
Lv 68
ElectricSteel
Sturdy
ThunderboltFlash CannonThunder WaveMirror Coat
Even
Snorlax
Lv 68
Normal
Thick Fat
Body SlamCrunchHeavy SlamHigh Horsepower
Risky
Decidueye
Lv 68
GrassGhost
Overgrow
Leaf BladeSpirit ShackleBrave BirdSucker Punch
Catchable
Available after Badge 5
Type
Normal

Catch Castform on Lush Jungle (walking, Lv 19-22). Alternate S.O.S. encounters; Called by any Pokémon during a sandstorm/hail.

View Castform locations

Ultra Sun & Ultra Moon Castform Locations

moderate rates for Castform across 38 locations in mid-game routes. Nothing complicated. Check the sorted list below, compare the top few options, and head to whichever is closest.

Best Locations to Catch Castform in Ultra Sun & Ultra Moon

You can catch Castform through 19 walking encounters from Lv. 19-45, but availability differs between Ultra Moon and Ultra Sun. Some spots are exclusive to one version.

Lush Jungle - North
Lv.19-22Grass
Rate 11%
SOS chain (sandstorm/hail)
Lush Jungle - South
Lv.19-22Grass
Rate 11%
SOS chain (sandstorm/hail)
Lush Jungle - West
Lv.19-22Grass
Rate 11%
SOS chain (sandstorm/hail)
Malie Garden
Lv.25-28Grass
Rate 11%
SOS chain (sandstorm/hail)
Mount Lanakila - Base
Lv.30-33Cave
Rate 11%
SOS chain (sandstorm/rain)
Tapu Village
Lv.30-33Grass
Rate 11%
SOS chain (sandstorm/rain)
Lush Jungle - North
Lv.19-22Grass
Rate 1%
SOS chain (rain)
Lush Jungle - South
Lv.19-22Grass
Rate 1%
SOS chain (rain)
Lush Jungle - West
Lv.19-22Grass
Rate 1%
SOS chain (rain)
Tapu Village
Lv.30-33Grass
Rate 1%
SOS chain (hail)
Haina Desert
Lv.32-35Grass
Rate 11%
SOS chain (rain/hail)
Exeggutor Island
Lv.42-45Grass
Rate 11%
SOS chain (sandstorm/hail)
Mount Lanakila - Outside
Lv.42-45Cave
Rate 11%
SOS chain (sandstorm/rain)
Route 17 - Northeast
Lv.33-36Grass
Rate 10%
SOS chain (sandstorm/hail)
Route 17 - Northeast
Lv.33-36Grass
SOS chain (rain)
Route 17 - West
Lv.33-36Grass
Rate 10%
SOS chain (sandstorm/hail)
Haina Desert
Lv.32-35Grass
Rate 1%
SOS chain (sandstorm)
Route 17 - West
Lv.33-36Grass
Rate 1%
SOS chain (rain)
Exeggutor Island
Lv.42-45Grass
Rate 1%
SOS chain (rain)

Castform Weakness

Castform's Normal typing leaves it vulnerable to Fighting. It shrugs off Ghost-type attacks completely. Only 1 weakness makes it relatively easy to build around defensively.

Castform Weakness and Resistance Chart
DamageTypes
2x (Weak)Fighting
0x (Immune)Ghost

What is Castform Weak Against

Good
1Weak
0Resist
1Immune
Score+1
4xCritical
None
2xWeak
½xResist
None
¼xResist
None
0xImmune

What is Castform Strong Against

0Strong
2Resisted
1Immune
Score-3
2xStrong
None
½xResisted
0xImmune

Best Pokemon Against Castform

Castform Evolutions

No evolution chain to worry about here. Castform is a standalone Pokemon with plenty of partners for breeding through two egg groups. Eggs come out average hatch time. View every chain in the Evolution Chart.

How to Evolve

No Evolution
Castform
#351Castform
Does not evolve

Breeding

Very Easy

Breed Castform easily with 52 breeding partners from the Indeterminate and Fairy egg groups. Pass egg moves like Amnesia, Clear Smog, Cosmic Power and 7 more to offspring.

Egg Groups
Gender
50.0%50.0%
Hatch Time
25 cycles·6,425 steps
Moderate~6 min with Flame Body
Egg Moves
10moves
Breed With (best first)
togekissmanaphyraichuazumarilltogedemarutogeticpachirisupikachugardevoirgalladeroseradeglalie

USUM Castform Best Moveset

AbilityForecast changes Castform's type and form to match the active weather: Fire in sun, Water in rain, Ice in hail. 70 across every stat. The moveset adapts to weather but the base stats prevent meaningful damage regardless of form. A concept without the stats to execute it.

Best Build

Experimental
Special Sweeper
Ability
Forecast
Item
Wateriumz
Best Nature for Castform
Timid+SPE

Castform best EVs are Sp. Atk and Speed

EVs

Special Sweeper Moveset

  • Rain Dance
  • Weather BallSTAB
  • ThunderCoverage
  • HurricaneCoverage

Moves List

Breadth over depth defines this movepool. Castform won't stack one type's damage ceiling, but coverage across 10 types means it always has an effective option. Last Resort and Headbutt anchor the STAB core.

Level-Up Moves

Lv 1
Tackle
D6010035Normal
Lv 10
Ember
D4010025Fire
Lv 10
Powder Snow
4010025Ice
Lv 10
Water Gun
D4010025Water
Lv 15
Headbutt
C10510015Normal
Lv 20
Hail
C10Ice
Lv 20
Rain Dance
B5Water
Lv 20
Sunny Day
A5Fire
Lv 25
Weather Ball
B7510010Normal
Lv 35
Blizzard
D110705Ice
Lv 35
Fire Blast
C110855Fire
Lv 35
Hydro Pump
A110805Water
Lv 45
Hurricane
A1107010Flying

TM Moves

TM
TM45
Attract
D10015Normal
TM14
Blizzard
D110705Ice
TM100
Confide
D20Normal
TM32
Double Team
15Normal
TM53
Energy Ball
C9010010Grass
TM42
Facade
C10510020Normal
TM38
Fire Blast
C110855Fire
TM35
Flamethrower
C9010015Fire
TM21
Frustration
D10020Normal
TM07
Hail
C10Ice
TM10
Hidden Power
9010015Normal
TM13
Ice Beam
C9010010Ice
TM17
Protect+4
C10Normal
TM77
Psych Up
D10Normal
TM18
Rain Dance
B5Water
TM44
Rest
C10Psychic
TM27
Return
D10020Normal
TM48
Round
9010015Normal
TM37
Sandstorm
D10Rock
TM55
Scald
D8010015Water
TM30
Shadow Ball
D8010015Ghost
TM88
Sleep Talk
C10Normal
TM22
Solar Beam
C20010010Grass
TM90
Substitute
C10Normal
TM11
Sunny Day
A5Fire
TM87
Swagger
D8515Normal
TM46
Thief
D6010025Dark
TM25
Thunder
A1107010Electric
TM73
Thunder Wave
C9020Electric
TM24
Thunderbolt
C9010015Electric
TM06
Toxic
C9010Poison
TM01
Work Up
C30Normal

Egg Moves

Egg
Egg
Amnesia
D20Psychic
Egg
Clear Smog
D5015Poison
Egg
Cosmic Power
D20Psychic
Egg
Disable
D10020Normal
Egg
Future Sight
C12010010Psychic
Egg
Guard Swap
10Psychic
Egg
Hex
D6510010Ghost
Egg
Lucky Chant
30Normal
Egg
Ominous Wind
D601005Ghost
Egg
Reflect Type
15Normal

Tutor Moves

Tut
Tutor
Defog
C15Flying
Tutor
Icy Wind
D559515Ice
Tutor
Last Resort
B2101005Normal
Tutor
Shock Wave
6020Electric
Tutor
Snore
D7510015Normal
Tutor
Tailwind
C15Flying
Tutor
Water Pulse
D6010020Water

Base Stats

Base Stats
Above
HP70
C
Attack70
C
Defense70
C
Sp. Atk70
C
Sp. Def70
C
Speed70
C
Total420
Details
Catch Rate
Challenging45 / 255
Growth Rate
Medium Fast1M XP
Height0.3 m
Weight0.8 kg
Base XP147
Abilities
Forecast
Changes castform's type and form to match the weather.
EV Yield
HP+1AtkDefSpASpDSpe
HP training source
Pokedex Entry

Although its form changes with the weather, that is apparently the result of a chemical reaction and not the result of its own free will.

Its form changes depending on the weather. The rougher conditions get, the rougher Castform’s disposition!

Castform Ultra Sun & Ultra Moon Guide

  • In Ultra Sun & Ultra Moon, watch for Machamp (Fighting) when using Castform. They all hit it super-effectively with STAB. Only 1 weakness means fewer dedicated counters to worry about.

  • For Ultra Sun & Ultra Moon, it depends on your team. Castform at 420 BST isn't a powerhouse, but the Normal coverage might be exactly what you're missing.

  • In Ultra Sun & Ultra Moon, Castform has a 420 base stat total and ranks as C-Tier: a niche pick in Ultra Sun & Ultra Moon's meta. It works best as a balanced. Raindance with Wateriumz is the standard set.

  • Forecast changes Castform's type and form to match the weather. That's the one you want on Castform. It's the only ability Castform has.

  • In Ultra Sun & Ultra Moon, Castform fills the balanced role. It's a special attacker with base 70 Sp. Atk. Base 70 Speed is workable. Faster than some, slower than many. And it's enough bulk to take a hit or two.

Game Availability

Castform first appeared in Ruby & Sapphire and has been available in 13 games across 8 generations. Obtainable through wild encounters in most titles where it appears.

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