How to Catch Castform (and its Shiny Form!) in Pokemon GO (2024)

Castform, the Weather Pokemon, is a unique addition to the Pokemon GO universe. Its ability to change forms based on the current weather conditions makes it a unique catch for trainers around the world. This means if you’re hunting for a specific form, you might need to adjust your playstyle or wait for the right weather.

How to Catch Castform (and its Shiny Form!) in Pokemon GO
image by Niantic(The Pokemon Company)

Originally introduced in Generation III (the Hoenn Region), Castform has four forms – Normal, Sunny, Rainy, and Snowy. Each form not only looks different but also comes with its own type and set of moves, making Castform a versatile companion for battles. Trainers seeking to complete their collection or add some variety to their team will need to be strategic in their hunt.

This guide will delve into everything you need to know about acquiring all Castform forms in Pokemon GO, including the coveted shiny variants.

Unveiling the Castform Quartet

There are four distinct Castform forms, each reflecting a different weather type:

  • Normal Castform: This is the base form, appearing as a round, cloud-like Pokemon. You can encounter it during cloudy, partly cloudy, or windy weather.
  • Castform (Rainy): Transformed by the rain, this Castform takes on a Water-type form, resembling a storm cloud. Look for it during rainy weather.
  • Castform (Snowy): Evolving in the midst of snow or fog, this Ice-type Castform sports an icy cloud design. Encounter it during snowy or foggy weather.
  • Castform (Sunny): Soaked in sunshine, this Fire-type Castform becomes a bright, fiery cloud. Sunny weather is your best bet to find it.

Strategies to Catch Every Castform

1. Leverage Weather Week:

Niantic, the developer of Pokemon GO, occasionally hosts Weather Week events. During these events, Castform spawns are significantly increased, regardless of the actual weather. Field research tasks also offer encounters with all Castform forms, making it the prime opportunity to collect them all, potentially even shinies (more on that later).

2. Embrace the Grind:

If Weather Week isn’t around, prepare to put in some effort. Here’s a breakdown for encountering each form:

  • Normal Castform: This is the most common variant. Look for it during windy, cloudy, or partly cloudy weather.
  • Castform (Rainy): Patience is key here. Head out during heavy rain showers and keep catching Pokemon that appear with the weather boost symbol to increase your chances.
  • Castform (Snowy): Snowy or foggy weather is necessary for this Ice-type Castform. These conditions might be less frequent depending on your location, so be prepared to dedicate more time during appropriate weather.
  • Castform (Sunny): Similar to the rainy variant, hunt for Castform (Sunny) during sunny weather. Prioritize catching Pokemon with the weather boost symbol.

3. Community is Key:

Join online Pokemon GO communities or local trainer groups. Fellow trainers can share weather conditions in their areas, allowing you to potentially travel to a location with the necessary weather to encounter a specific Castform form.

4. Incense and Lures:

Using Incense or Lures can attract nearby Pokemon to your location, potentially increasing your chances of encountering a Castform form during the appropriate weather conditions.

5. Patience is a Virtue:

While some strategies can improve your odds, encountering specific Castform forms can be down to luck. Persistence is key, so keep exploring and catching Pokemon, especially during appropriate weather or events.

Weather Week: A Trainer’s Boon

Thankfully, there’s an annual event that makes acquiring all Castform forms much easier: Weather Week! During this special week-long event, Niantic, the developer of Pokemon GO, boosts Castform spawns and introduces special Field Research tasks that reward encounters with all four Castform forms, regardless of the actual weather. This is an excellent opportunity to snag those missing forms and potentially even encounter a shiny Castform (more on that later).

Tip: Keep an eye out for official announcements from Niantic to know when the next Weather Week is happening.

Shiny Hunters Rejoice: Can Castform Be Shiny?

How to Catch Castform (and its Shiny Form!) in Pokemon GO
image by Niantic(The Pokemon Company)

The answer is a resounding yes! All four Castform forms boast unique shiny variants. However, encountering a shiny Castform is quite rare, with the base shiny rate being around 1 in 512 encounters.

Fortunately, events like Weather Week can increase the chances of encountering shiny Castform. During these events, the shiny rate is suspected to be boosted, although the exact numbers remain undisclosed by Niantic.

Remember, even with a boosted rate, encountering a shiny Castform requires dedication and a good dose of luck. Keep exploring, catching Pokemon, and participating in events to maximize your chances!


Catching all forms of Castform in Pokémon GO presents a unique challenge that tests your understanding of the game’s weather system and your persistence as a trainer. Whether you’re after the standard forms or the elusive shiny variant, the journey to capture these weather-themed Pokémon can be as unpredictable as the weather itself. But with the right strategies and a bit of patience, you can add all forms of Castform to your Pokédex.

Embrace the challenge, and let the weather guide your adventure in Pokémon GO!

Also Read This: How to Catch Regice (and its Shiny Form!) in Pokemon GO (2024)

Q&A Section

Q: Can Castform’s form change after being caught?

A: No, once Castform is caught, its form remains unchanged, even if the weather changes.

Q: Is there any way to predict when a shiny Castform will appear?

A: Shiny Pokémon appearances, including Castform, are random. There’s no way to predict exactly when a shiny will appear.

Q: Can I catch all forms of Castform in any location?

A: Yes, all forms of Castform can appear in any location, but their appearance depends on the current weather conditions in the game.

Q: Are there any items that can change Castform’s form?

A: No, there are no items that can change Castform’s form. Its form is solely determined by the current in-game weather.

Q: Is there a way to track the weather conditions in Pokemon GO?

A: The in-game map displays a weather icon in the top left corner, indicating the current weather conditions affecting Pokemon spawns.

Hello friends, My name is Nitin and I'm the founder, owner and writer of Gamer Urge Blog. I'm a Tech savvy and a gamer. I'm passionate about knowing things related to tech, internet and gadgets.

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