Mastering Humidity in Pokémon Pokopia
Humidity is one of the most important environmental mechanics in Pokémon Pokopia. It affects how your habitats behave, which Pokémon show up, and whether certain story quests can be completed at all. This guide walks you through everything you need to know: how humidity works, how to raise or lower it, and how to use Slowpoke’s yawns, habitats, and special items to shape the weather in your favor.
Why Humidity Matters in Pokémon Pokopia
Very early in the game, you’ll be asked to change the humidity for quests like Yawn Up a Storm and the Withered Wasteland storyline. These quests often require a specific humidity level before the story moves on or certain Pokémon appear.
Understanding humidity is essential because it:
- Unlocks progress in story areas such as the Withered Wasteland and beyond.
- Allows you to free certain Pokémon (like Onix) once conditions are right.
- Changes which habitats can thrive and which Pokémon they attract.
- Lets you fine-tune environments to match Pokémon preferences (for example, Water-type Pokémon favor wetter areas).
Instead of treating humidity as a single hidden stat, think of it as the sum of everything in an area: water, plants, rock formations, and man-made objects like campfires or special items.
How Humidity Works: The Basics
In Pokopia, humidity is a local environmental value that fluctuates based on what you build or modify. It can be thought of as a sliding scale from very dry to very wet.
Key points to understand:
- Localized effect: Humidity is calculated for a specific patch of land or a habitat, not the entire map at once.
- Dynamic changes: Water sources, plants, and special structures increase humidity, while deserts, bare ground, and certain items lower it.
- Quest thresholds: Quests like the Slowpoke rain event often require reaching a target humidity score, effectively asking you to maximize the wetness of a region.
Although the game doesn’t show a standard numerical bar, you can get clear feedback via Slowpoke’s yawns, which essentially act as an in-world humidity meter.
Reading Humidity with Slowpoke’s Yawn
Once you unlock Slowpoke, it becomes your primary tool for checking humidity.
Unlocking Slowpoke
If you haven’t met Slowpoke yet, you generally need to create a seaside-themed grass habitat to lure it in. This usually involves:
- Placing several pieces of tall grass directly next to the ocean or sea.
- Ensuring the habitat is actually registered as a seaside tall grass-type area.
- Waiting for Slowpoke to arrive and then interacting with it.
The precise requirements are introduced through your early habitat tutorials and Professor Tangrowth’s guidance.
Using Slowpoke to Check Humidity
Once Slowpoke is available, you can use it to analyze any area’s humidity:
- Ask Slowpoke to follow you.
- Lead it to the part of the map or specific habitat you want to check.
- Interact with Slowpoke to prompt a yawn.
The yawn will be scored. For some quests, such as the rain-summoning mission, you’ll need a perfect or near-perfect score (often represented as 100 points) to trigger the desired weather change. If the score is low, you know the area is still too dry and needs more water-rich elements.
Making an Area Wetter: Increasing Humidity
Most of your early humidity-related objectives revolve around turning a dry area into a lush, moist environment. This is easier than drying things out because many environmental features passively increase humidity.
Core Actions to Raise Humidity
Below are the most reliable ways to make an area more humid in Pokémon Pokopia:
- Water dry ground and withered plants: Using water-based actions (like Water Gun) on cracked earth, dead trees, and shriveled plants gradually raises moisture levels.
- Revive flowers and plant new ones: Creating vibrant flower patches is a strong, persistent source of humidity. Hydrated flowers count more than decorative props.
- Plant and water trees: Living trees, especially when regularly watered, contribute to a stable humid microclimate.
- Expose natural springs: Break cracked rocks or barriers that are blocking dripping water to create pools and streams.
- Build and fill water features: Fountains, ponds, and similar structures amplify local humidity, particularly when placed in or near natural water.
- Move habitats near water: Relocating a habitat so it touches rivers, pools, or the sea will significantly raise its humidity rating.
Using Rock Smash to Unlock Water Sources
Some regions, like the Withered Wasteland, hide water behind breakable rocks. To take advantage of this, you need to unlock Rock Smash, often by befriending a Fighting-type Pokémon who can teach you the move (such as Hitmonchan).
Once you have Rock Smash:
- Look for rocks or cliff faces with visible cracks and moisture.
- Break these to let water flow freely, forming new pools or streams.
- Use those pools as anchors for fountains or as wet adjacency for habitats.
This approach can cause a dramatic jump in humidity, often pushing you over the threshold for humidity-based story steps.
Humidity-Boosting Habitats and Structures
Some habitats and decorations are clearly associated with water and thus enhance humidity:
- Hydrated tall grass or wet meadow habitats: Formed by combining grass tiles with sufficient watering, these zones favor humidity-loving Pokémon.
- Flower fields: Large, well-watered flower beds both look vibrant and boost the humidity score.
- Rain Dance sites: Special habitats designed for rain-themed events can influence both weather and humidity when active.
In general, if a habitat visually looks lush, green, and damp, it’s likely helping your humidity score.
Checklist: Raising Humidity for the Slowpoke Rain Quest
When you’re preparing for a rain-related quest (such as one where Slowpoke must produce a perfect yawn), use this quick checklist:
- Water every patch of dry earth and every wilted plant in the target area.
- Revive dead trees and plant extra trees if the area still looks sparse.
- Smash cracked rocks that appear to be leaking water.
- Install fountains or similar water features in the new pools.
- Create or expand flower fields and wet grass habitats.
- Relocate nearby habitats closer to new or existing water sources.
- Invite Water-type Pokémon to relevant habitats for extra flavor and potential quest triggers.
Making an Area Drier: Decreasing Humidity
Drying out an environment is less intuitive but just as important, especially when a Pokémon prefers arid conditions or a quest demands a lower humidity rating.
Core Actions to Lower Humidity
Use these strategies when you need to create a drier microclimate:
- Move habitats away from water: Even a small pool or shoreline can keep humidity high. Shift habitats inland and away from rivers, ponds, and the sea.
- Favor dry earth and hardy plants: Place habitats in areas with cracked ground or naturally arid soil, and avoid lush grass.
- Reduce dense greenery: Remove or thin out heavily watered flowers and trees that are directly touching the habitat area.
- Use campfires: Placing one or more campfires near a habitat nudges its conditions toward warm and dry.
- Deploy humidity-reducing items: Special items (such as the smooth rock) are designed to automatically lower humidity in their vicinity.
Using the Smooth Rock to Control Humidity
The smooth rock is particularly powerful, as it continually suppresses moisture without any additional upkeep.
| Step | What to Do | Why It Helps |
|---|---|---|
| 1 | Acquire the smooth rock during the early humidity quests. | Unlocks passive humidity control in the target area. |
| 2 | Place the rock near habitats that are too wet. | Gradually shifts conditions to drier levels. |
| 3 | Use the Pokémon Center’s 3D printer to duplicate it later. | Allows you to manage humidity in multiple zones at once. |
| 4 | Combine with campfires and distance from water. | Ensures a strong and stable drop in humidity. |
Once you’ve restored and upgraded the Pokémon Center, the smooth rock can be replicated via the building’s 3D printer, letting you deploy multiple humidity-control anchors across the map.
Key Story Progression: Humidity and the Withered Wasteland
One of the earliest major arcs that showcases the humidity system is the Withered Wasteland, a parched area where the environment is barely alive and a giant Onix is trapped behind rocky barriers.
High-Level Objective Flow
While the game allows some flexibility, a recommended progression often looks like this:
- Arrive in the Withered Wasteland and place your first home flag.
- Speak to Professor Tangrowth to begin rebuilding the Pokémon Center and learning about habitats.
- Construct initial habitats for early Pokémon such as Charmander, Scyther, Hitmonchan, Timburr, and Drilbur to unlock building and terrain abilities.
- Set up your own dwelling using the Leaf Kit Den and claim it with the Ditto flag.
- Raise the environment level by expanding habitats and meeting local Pokémon needs.
- Obtain the Pokémon Center rebuilding kit and restore the Center to unlock services like the PC and 3D printer.
- Explore the caves northwest of the Center to find Onix and learn that the area’s dryness is part of the problem.
- Talk to Tangrowth again and initiate the humidity-focused quests.
- Attract Slowpoke via a seaside tall grass habitat and escort it safely toward the Pokémon Center.
- Build paths and moisten the route so Slowpoke can travel comfortably.
- Start the Yawn Up a Storm style quest where Slowpoke’s yawn score must reach the required threshold.
- Raise humidity by following tips from Bulbasaur, Squirtle, and Slowpoke’s requests (watering, opening streams, creating flower fields, etc.).
- Create a Rain Dance site habitat and complete any related objectives.
- Once humidity is high enough, break the remaining rocks, free Onix, and report back to Tangrowth.
By the time you free Onix and complete this story segment, you’ll have a solid grasp of how to manipulate humidity for both quests and habitat design.
Practical Tips for Efficient Humidity Management
Humidity changes can be time-consuming if you approach them randomly. Here are practical ways to keep the process efficient.
Plan Before You Build
- Decide on the desired climate first: Do you want this habitat to be damp and lush, or warm and dry? Plan the water sources and plants accordingly.
- Cluster similar habitats: Group water-friendly habitats near lakes and dry-adapted habitats in more arid sections to minimize future rework.
- Leave room for utilities: Reserve space in each cluster for items like smooth rocks, campfires, or fountains.
Use Slowpoke as a Progress Check
Don’t wait until you think you’re done before checking humidity. Instead:
- Bring Slowpoke along after each major change (new water source, big flower patch, or relocation of habitats).
- Watch how the yawn score changes; if it barely moves, you may need a bigger intervention like opening a spring.
- Use the score as a hint to which actions matter most in that particular area.
Combine Natural and Artificial Tools
In practice, the fastest way to reach humidity goals is to combine environment edits with items:
- Use Rock Smash and watering to get a strong natural baseline of humidity.
- Add fountains and Rain Dance habitats to push the score higher for wet objectives.
- Deploy smooth rocks and campfires when you overshoot and need to dial it back.
Frequently Asked Questions
How do I quickly make an area more humid?
The fastest approach is to unlock and open any blocked water sources with Rock Smash, then place fountains or other water structures in the new pools. Follow up by watering every dry patch of ground, reviving plants, and creating flower or wet grass habitats. Finally, move nearby habitats closer to those water sources and check the humidity using Slowpoke.
Why is my humidity not increasing even after watering plants?
Small actions like watering one or two plants may not be enough. Check whether there are larger structural issues, such as blocked streams or a complete lack of trees and flowers. Try breaking cracked rocks to open springs, planting and watering multiple trees and flower clusters, and building water-related structures. Then ask Slowpoke to yawn again to see if the score has improved.
How can I tell when I’ve hit the required humidity level for a quest?
Quest objectives linked to humidity are validated through Slowpoke’s yawn score or through explicit quest updates. If the quest mentions a specific score or a “perfect” yawn, keep raising humidity until the yawn reaches that threshold. When you succeed, your quest log will typically update and any related scripted events (such as rain or dialogue) will trigger.
Can I use the smooth rock in multiple areas?
Yes. After you progress the story far enough to restore the Pokémon Center, you’ll gain access to a 3D printer. This device can duplicate certain key items, including the smooth rock, letting you place copies in different regions. This is extremely useful when you want to fine-tune humidity for several habitats at once.
Do different Pokémon prefer specific humidity levels?
While Pokopia does not present humidity preferences as exact numbers, Pokémon types generally align with certain environments. Water- and Grass-type Pokémon often favor wetter habitats, while some Rock- and Ground-type Pokémon are more comfortable in dry conditions. Building habitats in a way that matches your target Pokémon’s theme will naturally align their preferred humidity range.
References
- Pokémon Pokopia – Official Site — The Pokémon Company. 2025-11-12. https://www.pokemon.com/
- Pokémon Pokopia – Game Help & Support — Nintendo Support. 2025-12-03. https://en-americas-support.nintendo.com/
- Climate and Weather: Humidity — National Weather Service, NOAA. 2024-06-10. https://www.weather.gov/jetstream/humidity
- Understanding Humidity and Its Effects — Met Office (UK). 2023-09-18. https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/humidity

