How to Change Weather in Pokémon Pokopia — Rain Dance & Sunny Day

Weather in Pokémon Pokopia is more than just a visual effect — it directly determines which Pokémon appear in your habitats, which materials you can gather, and which special events can trigger. Many players struggle to find weather-exclusive Pokémon because they do not know that weather can be manually changed. This guide explains everything about the weather system, Castform Weather Charms, weather-specific habitats, and a complete table of all weather-exclusive Pokémon spawns.

Weather Types in Pokémon Pokopia

There are three main weather types in Pokémon Pokopia, each affecting gameplay in different ways:

• Sunny: The default fair-weather state. Most Pokémon appear during sunny weather, and gathering efficiency for plant-based materials is increased. Fire-type and Grass-type Pokémon are more active during sunny conditions.
• Rainy: Rain increases water levels in ponds and rivers, enables fishing at new spots, and causes mushrooms and moss to appear. Water-type Pokémon like Squirtle and its evolution line become more common, and certain habitats only activate during rain.
• Cloudy: An overcast sky that is neither sunny nor rainy. Some Pokémon exclusively appear during cloudy weather, including several Ghost-type and Psychic-type species. Cloudy weather also increases the chance of finding rare items in sparkle spots.

Castform Weather Charms

The key to controlling weather in Pokémon Pokopia is the Castform Weather Charm system. Castform is a unique Pokémon that changes form based on weather conditions, and the game uses its forms as the basis for weather-changing items called Weather Charms.

How Weather Charms Work

Weather Charms function as toggle items. When you use a charm, it flips the weather between the charm's associated type and whatever weather was previously active. For example, if it is currently sunny and you activate the Rain Charm, the weather changes to rainy. Using the Rain Charm again while it is raining reverts the weather back to its natural state.

Important details about charm mechanics:

• Charms affect only your current area. Moving to a different zone resets the weather to that zone's natural state.
• Weather changes are instant. There is no transition animation — the environment immediately updates with new visual effects and spawn tables.
• Charms have no cooldown. You can toggle weather as many times as you want without any penalty.
• Only one charm can be active at a time. Activating a new charm overrides any previously active weather effect.
• Charms are stored in your Key Items pocket and cannot be dropped or sold. Check your Key Items inventory to confirm you have all three.

Getting Weather Charms from Professor Tangrowth

Weather Charms are obtained from Professor Tangrowth as part of the main story progression. You receive the Sun Charm after completing the first chapter of the story, the Rain Charm after the second chapter, and the Cloud Charm after a special side quest that Professor Tangrowth gives you later in the game.

The Cloud Charm side quest is the most commonly missed. After completing the Rocky Ridges storyline, return to Professor Tangrowth's lab and speak to him. He will mention unusual weather patterns and ask you to investigate three weather anomaly sites — one in each of the first three areas. Visit all three sites (marked on your map with a cloud icon), collect the data samples, and return them to Tangrowth. He rewards you with the Cloud Charm and a brief explanation of Castform's relationship to weather.

If you are unsure whether you have collected all three charms, check your Key Items pocket in the inventory menu. All three charms should be listed there once obtained.

Weather-Exclusive Pokémon Spawns

Certain Pokémon in Pokopia only appear under specific weather conditions. Here is the complete table of weather-exclusive spawns:

Weather-Specific Habitats

Two habitats in Pokémon Pokopia are directly tied to weather mechanics:

• Rain Dance Site: This habitat activates only during rainy weather. It requires water features, rain-collecting items, and wet-terrain decorations. When active during rain, it attracts Water-type and Electric-type Pokémon that are otherwise very rare. The Rain Dance Site is one of the best habitats for catching Pokémon like Goomy and its evolution line.
• Sunny Day Site: The sunny counterpart to Rain Dance Site. This habitat requires sun-related items like sundials, solar panels, and heat lamps. When active during sunny weather, it attracts Fire-type and Grass-type Pokémon with boosted spawn rates. Larvesta, one of the rarest Pokémon in the game, has the highest spawn rate at a Sunny Day Site.

Building both of these habitats in the same area gives you the flexibility to swap between weather conditions and access different Pokémon pools without traveling to a new zone.

Weather & Material Farming

Weather also affects which materials spawn in the environment. Use weather changes strategically to farm specific resources:

• Rainy weather — Spawns mushrooms and moss on rocks. Moss is required for several advanced habitat decorations. Mushrooms are key cooking ingredients for Mushroom Soup.
• Sunny weather — Boosts berry growth speed by 50%. Berries ripen faster on farm plots, and wild berry nodes produce double the normal yield.
• Cloudy weather — Increases rare item drops from sparkle spots by approximately 30%. If you are farming for rare crafting components, cloudy weather is your best friend.

Tips for Using Weather Effectively

1. Before hunting a specific Pokémon, check our Pokémon database to see if it requires a particular weather condition. This saves hours of fruitless searching.
2. Build weather habitats in areas that naturally support that weather type. A Rain Dance Site built in a naturally rainy area gets bonus spawn rates compared to one built in a desert zone.
3. Use weather changes to farm specific materials. Toggling between rainy and sunny is the most efficient way to collect both mushrooms and berries in a single play session.
4. Remember that weather affects the entire area, not just your habitats. Wild Pokémon in the area also change based on weather, so toggling weather can help you encounter new species even without building a habitat.
5. Do not forget the Cloud Charm. Cloudy-exclusive Pokémon like Ralts and Litwick are easy to miss because cloudy weather rarely occurs naturally. Use the Cloud Charm proactively to fill those Pokédex entries.

Mastering the weather system in Pokémon Pokopia is essential for completing your Pokédex and building every habitat. With the three Castform Weather Charms and strategic habitat placement, you can access every weather-exclusive Pokémon and material in the game.