Revision 9

Overview

Weather in inZOI changes dynamically and varies by location. Zois react to conditions: they get cold in winter without proper clothing, seek shade in heat, carry umbrellas in rain, and run for cover in storms. Weather is tied to the Time and Seasons system, with each season bringing typical conditions for the location.

Each of the three cities has a distinct climate. Dowon has dramatic seasonal shifts. Bliss Bay stays mild year-round. Cahaya is tropical and warm at all times.

Weather types

The game simulates several weather conditions:

Weather by location

Dowon

Dowon has four distinct seasons mirroring Seoul's climate:

Bliss Bay

Bliss Bay has mild, warm weather year-round, inspired by Southern California. Seasons change the lighting and some foliage but temperature differences are small. Rain is occasional and light. Snow is extremely rare. Zois wear light clothing all year and can visit the beach in any season. The near-constant good weather makes Bliss Bay ideal for surfing, swimming, and beach fitness.

Cahaya

Cahaya has a tropical climate, warm at all times with periodic warm rain. No winter cold to worry about. Zois wear summer clothing year-round. The warm water makes swimming and snorkeling comfortable at any time. However, Cahaya can experience natural disasters like floods that damage crops on the main island, adding a risk element to farming.

Effects on Zois

Smart Zoi factors weather into autonomous behavior. AI-controlled Zois change clothes before going outside in cold weather, carry umbrellas when rain is expected, and prefer indoor activities during storms. The 2026 Roadmap includes improved umbrella handling in Q1. Zois will hold umbrellas in their left hand, freeing the right for other items.

Weather in Edit City

Players can temporarily override weather using Edit City mode. Three adjustable settings with intensity sliders:

Overrides are temporary and primarily used for Photo Mode shots or creative fun. Forcing snow in Bliss Bay or making it rain in Cahaya creates unusual visuals popular for Canvas screenshots. Normal weather resumes after exiting Edit City or advancing time.

Seasons

The game follows a four-season cycle, with each season lasting seven in-game days. Seasons determine the baseline weather patterns, temperature ranges, and available seasonal events. The full cycle from Spring through Winter takes 28 in-game days.

For more details on the day/night cycle and how time progresses, see the Time and Seasons article.

Temperature and Clothing

Temperature is tracked as a gameplay variable that affects Zoi comfort and health. Zois respond to temperature changes by automatically switching their outfit to match the conditions, pulling from their wardrobe based on the current season and weather.

Automatic Clothing Changes

When the temperature shifts significantly, Zois autonomously change into appropriate clothing. In cold weather, they put on coats, scarves, and winter accessories. In hot weather, they switch to lighter outfits. This behavior is automatic and does not require player input, though players can manually override outfit choices through the wardrobe interface.

Wrong Clothing Consequences

If a Zoi is wearing clothing inappropriate for the current temperature, they suffer negative effects:

• Too cold: The Zoi shivers visibly, walks with a hunched posture, and their Comfort need drops faster. Prolonged exposure without warm clothing can lead to sickness.

• Too hot: The Zoi fans themselves, sweats visibly, and may develop heatstroke if the temperature exceeds 30°C for an extended period.

Sickness Mechanics

Weather is the primary driver of the sickness system in inZOI. Several types of illness can be contracted based on weather exposure, and each has distinct causes and symptoms.

Types of Weather-Related Illness

The v0.6.0 update significantly rebalanced cold mechanics. Before the patch, Zois could catch a cold after just one hour of rain exposure, which many players felt was too punishing. The updated six-hour threshold makes colds a consequence of prolonged neglect rather than brief exposure.

Cold Contagion

Colds in inZOI are contagious. If a sick Zoi spends time near other Zois in close quarters, there is a chance the illness will spread. This makes managing a sick Zoi important in multi-Zoi households, as an untreated cold can cascade through the entire family. Keeping a sick Zoi at home and treating them promptly is the best way to prevent an outbreak.

Cures and Prevention

The First Aid Kit is a reusable furniture item. Once placed in a Zoi's home, any sick Zoi in the household will autonomously walk to the kit and use it to cure themselves. The Vaccine Donut is a one-time consumable that permanently prevents colds for a single Zoi, making it a worthwhile investment for Zois who spend significant time outdoors.

Umbrella System

Umbrellas function through the Umbrella Stand furniture item placed in Build Mode. When a Zoi is about to leave home during rainy weather, they will automatically grab an umbrella from the stand near the door. The umbrella protects them from rain exposure, preventing the sickness timer from accumulating. If no Umbrella Stand is placed, or if the Zoi leaves from an exit without a nearby stand, they go out without protection.

Rain and Snow Visual Effects

Weather states produce detailed visual effects on both the environment and Zoi characters:

• Wet clothing: During rain, Zoi clothing gradually becomes visually wet with darkened fabric and dripping effects. The wetness level increases with rain intensity and exposure duration.

• Puddle splashing: At Moderate Rain and above, puddles form on streets and paths. Zois splash through them while walking, creating particle effects.

• Snow accumulation: During snowfall, snow gradually builds up on the ground, rooftops, cars, and outdoor furniture. The accumulation increases with snowfall duration and intensity.

• Frost and ice: In Winter, windows develop frost patterns, and water features can freeze over visually.

• Breath visibility: In cold temperatures, Zois' breath becomes visible as small vapor clouds.

Natural Disasters

inZOI features a natural disaster system that introduces periodic extreme weather events. These disasters go beyond normal weather and can cause property damage, crop loss, and health emergencies.

Crop Damage

Natural disasters can devastate gardens and farming operations. Heavy rain floods garden plots, dust storms coat plants and inhibit growth, and heatwaves cause rapid wilting. Players who invest heavily in gardening should monitor weather forecasts and consider purchasing Natural Disaster insurance to offset losses.

Insurance System

inZOI offers an insurance system that helps protect against weather-related financial losses. Three insurance types are available:

Insurance is purchased through the in-game services menu. Natural Disaster Insurance is the most relevant for weather-related gameplay, as it reimburses the cost of damaged crops and any property repairs needed after a disaster event. For more information on the death system, see the Deaths article.

Indoor Temperature

Introduced in the v0.5.0 update, the indoor temperature system tracks heat and cold inside Zoi homes separately from outdoor conditions. Indoor temperature is influenced by:

• Outdoor weather: Extreme outdoor temperatures gradually affect indoor temperature if the home lacks climate control.

• Heating and cooling appliances: Placing heaters, air conditioners, and fireplaces in Build Mode helps regulate indoor temperature. These appliances consume electricity and increase utility bills.

• Insulation: Higher-quality wall and window materials provide better insulation, slowing the rate at which outdoor temperatures penetrate indoors.

• Open doors and windows: Leaving doors or windows open accelerates temperature equalization with the outdoors.

Maintaining comfortable indoor temperature is important for Zoi well-being. If the indoor temperature drops too low or rises too high, Zois experience the same comfort penalties as being outdoors in extreme weather. A well-equipped home with proper heating and cooling is one of the best defenses against weather-related discomfort.

Weather and Seasonal Events

Certain seasonal events are tied to specific weather conditions or seasons. Weather plays a role in setting the atmosphere for these events and may influence event-specific activities.

Weather during these events is not locked; a Holiday Festival can occur on a clear Winter day. However, the event's visual presentation is enhanced when the natural weather aligns with the theme.

Patch History

Weather mechanics have been refined across several updates since Early Access launch:

These changes reflect Krafton's ongoing commitment to making weather impactful without being overly punishing. The v0.6.0 cold rebalance in particular was a direct response to community feedback about sickness being too frequent in rainy cities like Dowon.

Weather and other systems