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Castform is a curious type of Pokémon in Pokémon GO, in that it has four different forms you can catch. The form you encounter depends on the weather you're experiencing in the real world at the time you try to catch it.

In this guide, we're going to explain exactly how to catch each of the four different forms of Castform.

How many Castform forms are there in Pokémon GO?

Castform has four different forms in Pokémon GO, and they're each based on a weather type. These four are normal, sunny, rainy, and snowy, and each of them look different visually.

To check which Castform you've caught, find the Pokémon in your Pokédex and select it. You should see the four different types, as well as which one you've caught (if you've caught any of them). Any you haven't caught will appear as a shadow, so use that as a guide.

How do I get each of Castforms forms?

As we mentioned earlier, each of Castform's changes form depending on the type of weather you're experiencing in the real world at the time of catching.

Here's a nice table describing the type of weather you need to have to catch each of Castform's forms.

Castform Forms Weather Types
Normal Clear, Cloudy, and Windy
Rainy Rain
Snowy Snow and Fog
Sunny Sun

What's not clear, is whether the time of day affects the weather type as well. For example, you can't have a sunny night, but if it was sunny during the day, you might still be able to catch the sunny Castform form.

If I catch a Castform, will its form continue to change with the weather?

Nope! If you catch a Castform with a sunny form, it will remain a sunny Castform during snow, rain, or normal conditions. Once caught, the type of Castform remains persistent forever.


Did you enjoy this guide? Was there anything we missed? Do you have any Pokémon GO-related questions? Leave a comment below

This article is part of our Pokémon GO walkthrough and guide series. We have articles that take you through the basics, covering How To Catch Pokémon: Throwing Tips, Poké Balls, & Capture Rates, How To Redeem Pokémon GO Promo Codes, How To Check A Pokémon's IVs Using An IV Calculator, How Trading Works, How To Track Pokémon Using Maps And Trackers, What Star Pieces And Stardust Do And How To Get Them, How Player Vs. Player Trainer Battles Work, and How To Complete Field Research And Research Breakthroughs And All Rewards.

We cover regular weekly and monthly Pokémon GO events, such as Spotlight Hour Times And Bonus Hour Times, and Community Days. We also have charts, including a Type Chart With Effectiveness And Weakness For All Types, an Egg Chart Explaining 2km, 5km, 7km, & 10km Eggs, and a Buddy Chart Explaining How To Earn Candy.

Elsewhere we cover Friend Code And Sharing Them For Easy XP and Which Pokémon GO 'Auto Catch' Companion Device Is The Best, plus more advanced tactics and info such as All Fast Moves And Charge Moves, How To Get TMs, And How It All Works, Shiny Pokémon And How To Catch Them, Glacial Lures, Magnetic Lures, Mossy Lures in Pokémon GO (And Their Exclusive Evolutions), How To Get Lots Of Candy Fast, How Lucky Pokémon Work & How To Catch Them, How To Catch All 27 Regional Pokémon, the Best Attackers And Best Defenders, All Raid Bosses And Best Counters Listed By Tier, What EX Raids Are And How To Get EX Raid Passes, What A Super Incubators Does And How To Get One, and How Get Mega Energy.

Pocket Monster-wise, we have specific guides for How To Get Pangoro, Sylveon, Glaceon, Aromatisse, Slurpuff, Sirfetch’d, Galarian Cofagrigus And More, How To Get Sylveon, Leafeon, Glaceon, Umbreon, Espeon, Vaporeon, Jolteon And Flareon, How To Evolve Wurmple Into Silcoon Or Cascoon, How To Get Tyrogue, Hitmonlee, Hitmonchan And Hitmontop, How To Use The Weather To Get Each Castform Form, How To Catch And Evolve Into Galarian Slowbro, How To Catch Smeargle, How To Find And Evolve Burmy, How To Catch Spinda, Where To Find Unown, How To Catch Ditto, and The Rarest Pokémon Including Wild, Shiny, Mythical And Regional Catches.

We also cover timed research and special events, including Mew's 'A Mythical Discovery', Jirachi's 'A Thousand-Year Slumber', Celebi's 'A Ripple In Time', and Regigigas' 'A Colossal Discovery'. Other (past) event guides include Twitch Codes List - Pokémon World Championship 2022, How To Battle A Challenger (World Championships 2022), How To Battle Fashion Challengers, 'A Spooky Message' Spiritomb Quest, Kanto Event FAQ, and the Summer Tour 2018 Chicago GO Fest And Dortmund And Yokosuka Safari Zones.

Finally, there's our WIP Pokémon GO Pokédex, which currently goes up to 400 Pokémon: #1-50 | #51-100 | #101-150 | #151-200 | #201-250 | #251-300 | #301-350 | #351-400.