Pokemon Guide
Castform is a Normal-type Pokemon introduced in Generation 3, known for changing form with the weather through its Forecast ability. This guide covers Castform’s stats, best moves, ability, weather forms, shiny form, typing, weaknesses, evolution and locations across Pokemon games.
Normal Form
Shiny Form
Weather Form
Last Updated: May 2026 | Page Status: This Castform guide supports current Pokemon games, Pokemon Champions and future updates. Location, moves and availability details will be updated as new Pokemon game data becomes available.
| Description | Quick Facts |
| Stats | Best Moves |
| All Moves | Weaknesses |
| Evolution | Locations |
| Abilities | FAQ |
Castform is a Normal-type Pokemon known as the Weather Pokemon. Its body reacts to weather conditions, allowing it to change into Sunny Form, Rainy Form or Snowy Form when its Forecast ability is active.
Competitive Overview
Castform is usually a niche competitive Pokemon because its stats are modest, but its weather-based identity gives it a unique role in casual battles and specialized formats. It can take advantage of Weather Ball, Forecast and weather-setting moves to change type and pressure different opponents.
Castform’s biggest strengths are its flexible weather forms, Weather Ball synergy and access to coverage moves such as Thunder, Hurricane, Fire Blast and Ice Beam. Its biggest issues are low base stats and reliance on weather to reach its most useful forms.
Here are the key facts to know about Castform, including its type, ability, height, weight and species information.
Name
Castform
National Dex
#0351
Type
Normal
Species
Weather Pokemon
Height
1’00” / 0.3 m
30 cm
Weight
1.8 lbs / 0.8 kg
0.8 kg
Abilities
Forecast
Castform has balanced but modest stats across the board. Its main value comes from weather synergy rather than raw offensive or defensive power.
Castform is best known for weather-focused moves and special coverage. These are some of Castform’s most useful and recognizable moves across Pokemon games.
Castform’s signature-style attack changes type and doubles in power during weather, making it central to Castform sets.
Sets rain to support Rainy Form, boost Water-type attacks and improve Thunder accuracy.
Sets harsh sunlight to support Sunny Form and strengthen Fire-type Weather Ball.
An older weather option that supports Snowy Form in games where hail is available.
A modern snow-setting option that supports Ice-type weather strategies in newer games.
A strong Electric-type coverage move that becomes more accurate in rain.
A powerful Flying-type attack that can pair well with rain in games where Castform learns it.
A strong Fire-type coverage move that benefits from sunny weather.
Castform can learn a weather-focused move pool across different Pokemon games, including Normal, Fire, Water, Electric, Ice and Flying coverage. Use the section below to view Castform’s move list by learn method.
Move data shown from: Pokemon Ultra Sun and Ultra Moon
Castform is normally a Normal-type Pokemon. With Forecast active, it can change into Fire, Water or Ice-type weather forms, but its base typing is Normal.
Type
Normal
Weaknesses
Fighting
Resistances
None
Immunity
Ghost
Castform’s ability is central to its identity because it changes Castform’s form and type in certain weather conditions.
Changes Castform’s form and type during certain weather conditions. Castform becomes Sunny Form in harsh sunlight, Rainy Form in rain and Snowy Form in hail or snow depending on the game.
Castform does not evolve into or from another Pokemon. Its main transformation mechanic comes from weather forms rather than evolution.
Single Stage
Does not evolve
Castform’s availability changes depending on the Pokemon game. It is often tied to weather-related areas, the Weather Institute or transfer support.
| Game | Where to Find Castform |
|---|---|
 Pokemon Red |
Not available because Castform had not been introduced yet. |
 Pokemon Blue |
Not available because Castform had not been introduced yet. |
 Pokemon Yellow |
Not available because Castform had not been introduced yet. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Gold |
Not available because Castform had not been introduced yet. |
 Pokemon Silver |
Not available because Castform had not been introduced yet. |
 Pokemon Crystal |
Not available because Castform had not been introduced yet. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Ruby |
Weather Institute on Route 119. |
 Pokemon Sapphire |
Weather Institute on Route 119. |
 Pokemon Emerald |
Weather Institute on Route 119. |
 Pokemon FireRed |
Trade, transfer or migrate from another game. |
 Pokemon LeafGreen |
Trade, transfer or migrate from another game. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Diamond |
Trophy Garden. |
 Pokemon Pearl |
Trophy Garden. |
 Pokemon Platinum |
Trophy Garden. |
 Pokemon HeartGold |
Trade, transfer or migrate from another game. |
 Pokemon SoulSilver |
Trade, transfer or migrate from another game. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Black |
Trade, transfer or migrate from another game. |
 Pokemon White |
Trade, transfer or migrate from another game. |
 Pokemon Black 2 |
Route 6. |
 Pokemon White 2 |
Route 6. |
| Game | Where to Find Castform |
|---|---|
 Pokemon X |
Trade, transfer or migrate from another game. |
 Pokemon Y |
Trade, transfer or migrate from another game. |
 Pokemon Omega Ruby |
Weather Institute on Route 119. |
 Pokemon Alpha Sapphire |
Weather Institute on Route 119. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Sun |
Route 17, Lush Jungle, Tapu Village, Haina Desert, Malie Garden, Mount Lanakila and Exeggutor Island. |
 Pokemon Moon |
Route 17, Lush Jungle, Tapu Village, Haina Desert, Malie Garden, Mount Lanakila and Exeggutor Island. |
 Pokemon Ultra Sun |
Route 17, Lush Jungle, Tapu Village, Haina Desert, Malie Garden, Mount Lanakila and Exeggutor Island. |
 Pokemon Ultra Moon |
Route 17, Lush Jungle, Tapu Village, Haina Desert, Malie Garden, Mount Lanakila and Exeggutor Island. |
 Pokemon Let’s Go Pikachu |
Not available in this game. |
 Pokemon Let’s Go Eevee |
Not available in this game. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Sword |
Not available in this game. |
 Pokemon Shield |
Not available in this game. |
 Pokemon Brilliant Diamond |
Trophy Garden. |
 Pokemon Shining Pearl |
Trophy Garden. |
 Pokemon Legends: Arceus |
Not available in this game. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Scarlet |
Not available in this game. |
 Pokemon Violet |
Not available in this game. |
 Pokemon Legends Z-A |
Location data not yet available. |
| Game | Where to Find Castform |
|---|---|
 Pokemon Winds and Waves |
Coming soon once official location, encounter or transfer information is confirmed. |
Castform has special weather forms that appear when Forecast is active. In harsh sunlight, Castform becomes Sunny Form. In rain, it becomes Rainy Form. In hail or snow, it becomes Snowy Form depending on the game.
Normal Form
Normal
Sunny Form
Fire
Rainy Form
Water
Snowy Form
Ice
Castform’s weather forms make it different from most single-stage Pokemon. These forms are not evolutions, but they are important for understanding Castform’s battle identity and move choices.
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Here are quick answers to common questions about Castform. This FAQ is visible on-page content only and does not use FAQ schema markup.
Castform is normally a Normal-type Pokemon. Its Forecast ability can change it into Fire, Water or Ice-type weather forms during certain weather.
Castform is weak to Fighting-type moves in its normal form. Its weaknesses change when Forecast changes its form and type.
No, Castform does not evolve into or from another Pokemon.
Castform’s ability is Forecast, which changes its form and type during certain weather conditions.
Castform’s best moves often include Weather Ball, Rain Dance, Sunny Day, Hail, Snowscape, Thunder, Hurricane and Fire Blast.
Castform is usually a niche Pokemon. It can be fun and flexible on weather teams, but its modest stats keep it from being a common top competitive pick.
The most common way to get Castform is through weather-related locations, the Weather Institute or transfer support depending on the game.
Yes, Castform has Sunny Form, Rainy Form and Snowy Form, which are tied to its Forecast ability and weather conditions.
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