Image via Niantic

Pokémon Become will sometimes take it, so you accept to go out of your manner to find a certain Pokémon. For example, when it'due south raining, water-blazon Pokémon volition appear far more frequently, making information technology easier to capture them. When it'south sunny out, you can expect to see Grass, Fire, and Footing-blazon Pokémon. There are even certain Pokémon forms that announced based on the atmospheric condition, such equally Castform. It'due south a weather Pokémon that has multiple forms, changing depending on the weather in your location. When it'due south sunny, Castform will be in its sunny form, and if information technology's rainy, Castform'southward rainy form will spawn. Post-obit the Weather Week event during the Season of Legends, Castform'south rainy transformation now has a risk of being shiny.

For the Weather condition Calendar week event, there are multiple ways you encounter a Castform in its rainy grade, and it doesn't take to be raining out. The weather increases the chances of it actualization, just yous should find it for the issue fifty-fifty when it's bright and sunny. It'll just exist spawning in the wild. It will not appear in one-star raids or five-kilometer eggs during the consequence. Because it's just showing up in the wild, that'due south the easiest method for you to find information technology, but it also means you need to walk by Pokémon spawn points for any chance of catching it. If y'all don't want to walk around, your chances significantly go down to observe it.

In one case the Weather Week result is over, Castform's rainy class volition only appear when it's raining out in your area. Yous tin always employ incense to effort and lure information technology to your location while it's raining.

Overall, the all-time way to catch a shiny version of Castform's rainy form will be when it's raining out, during, and after the Weather Calendar week event. At that place'southward no guarantee you'll be able to encounter it in the wild, so y'all want to try and lure as many as yous can to your location whenever possible.