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Reason: Generation VI and VII details; Gates to Infinity descriptions.

The weather (Japanese: 天気 weather) is a set of mechanics in the Pokémon games that change the battle environment, activating Abilities, modifying certain moves, and potentially damaging the Pokémon in battle or affecting their stats. They have been included in every core series game since Generation II. In battle, weather is either determined by the location of a battle, due to overworld weather, or by a Pokémon creating a new type of weather with a move or Ability. Only one type of weather may be present at a time, and only the most recent type of weather will take effect.

In Generation II, only moves that cause weather were introduced and weather was only present in battles, not in the overworld. Generation III introduced overworld weather and weather-related Abilities, as well as a new weather-causing move. The biggest modification to weather in Generation IV was the introduction of four held items (Heat, Damp, Smooth, and Icy Rocks) that increase the duration of weather caused by weather-changing moves or Abilities with effects on weather conditions. Generation V mostly introduced greater overworld weather variability, especially in seasons affecting the weather in certain locations.

Types of weather and effects

Overview

There is also a glitch that occurs in Pokémon Platinum, HeartGold and SoulSilver, called acid rain, that results in the simultaneous occurrence of all then-existing weather conditions at once, damaging all Pokémon on the field.

In Generation V, the weather was given an icon which appeared on the DS or 3DS's bottom screen in a battle whenever weather was occurring. Since fog and shadowy aura do not appear in-battle in Generation V, they have no icons. When there is no weather, no icon is shown.

In Generation VI onwards, the background of the bottom screen shows an animation of the current weather.

In Pokémon Sun, Moon, Ultra Sun, and Ultra Moon, the 3DS's bottom screen displays an icon and background animation of the current weather.

In Pokémon Sword and Shield, the Wild Area and Isle of Armor have nine kinds of weather in the overworld.

Causing weather

Most of the types of weather have a move or Ability that will cause that weather.

Air Lock and Cloud Nine also suspend the effects of weather while they are active.

In addition, Defog may clear fog from an overworld area (in Generation IV only). It is the only move that has any effect on weather in the overworld.

Weather normally lasts for 5 turns when it is called by a move. Prior to Generation VI, weather created by an Ability would continue until the battle ended or another type of weather took its place; since Generation VI, weather created by Abilities also lasts for only 5 turns, with the exception of weather created by Desolate Land, Primordial Sea, and Delta Stream.

If multiple Pokémon with Abilities that change the weather are sent in simultaneously, the Abilities activate in order from fastest Pokémon to slowest Pokémon (or the reverse during Trick Room); this means that the slowest Pokémon's Ability will override the other Abilities.

If a Pokémon holding one of four held items creates weather that would otherwise last 5 turns, it instead lasts 8 turns. The rock that affects each type of weather is shown below.

Effects

Three of the types of weather can do damage to Pokémon in battle at the end of a turn. In a sandstorm, hail, or shadowy aura, any Pokémon that is not Rock-, Ground-, or Steel-type; Ice-type; or a Shadow Pokémon (respectively) will be damaged for 1/ 16 of its maximum HP. Certain Abilities prevent damage from weather effects, though, and a Pokémon holding Safety Goggles is also immune to damage from weather effects.

Sandstorm and fog both affect the stats of Pokémon on the battlefield. Since Generation IV, in a sandstorm, the Special Defense of Rock-type Pokémon is increased by 50%. In fog, the accuracy of all Pokémon in battle is decreased.

During harsh sunlight, all Pokémon are immune to freezing.

Harsh sunlight and rain both affect the power of certain types of moves. Harsh sunlight strengthens the power of Fire-type moves by 50% and weakens the power of Water-type moves by 50%, while rain does the opposite, strengthening Water-type moves by 50% while weakening Fire-type moves by 50%.

Certain specific moves are also affected in special ways by the weather.

Activated Abilities

The following Abilities are activated when a type of weather comes into effect. Most of these Abilities have no effect if no weather is active.

In addition to the above Abilities, Harvest is guaranteed to restore a Berry whenever it triggers in harsh sunlight, and the Abilities Overcoat and Magic Guard will prevent weather-related damage.

Castform and Weather Ball

Castform is a Pokémon uniquely designed to take advantage of the weather. Its Ability, Forecast, causes it to change form when a type of weather is present. Forecast does not cause a unique change for every possible type of weather, though.

Weather Ball is a move that uniquely takes advantage of the weather. In Generation III, it was introduced along with Castform and was Castform's signature move.

Whenever there is a type of weather present, Weather Ball's base power will double to 100. Weather Ball's type also changes during most types of weather.

Because of its Ability, Castform has a unique synergy with Weather Ball that no other Pokémon that can learn Weather Ball has. In harsh sunlight, rain, or hail, Castform will always get STAB thanks to its Ability.

Weather-dependent evolution

Starting at level 50, Sliggoo will evolve into Goodra if it is leveled up during rain or fog in the overworld.

In other games

In the Pokémon Mystery Dungeon series

This section is incomplete.

Please feel free to edit this section to add missing information and complete it.

Reason: How much does Rainbow Light heal?.

Various weather effects appear in certain dungeons in the Pokémon Mystery Dungeon series. Weather effects can change from floor to floor, and can also be altered through the use of Wonder Orbs. In Gates to Infinity, Pokémon will regenerate HP only if the weather is Clear, or if it is holding a Weather Band. In Super Mystery Dungeon and Rescue Team DX, Pokémon can regenerate HP in any weather as long as they do not take damage from the weather condition, or if it is holding a Weather Looplet.

Uproar Forest, Howling Forest, Lightning Field, Mt. Faraway, Northern Range, Pitfall Valley, Wyvern Hill and Purity Forest have random weather effect on specific floors.

The Abilities Cloud Nine and Air Lock cause the floor to have ineffective weather as long as there is at least one Pokémon on the floor with either of the aforementioned Abilities. Prior to Gates to Infinity, the Abilities change the weather on the floor to Clear and renders Wonder Orbs, moves, and other Abilities that change the weather useless.

Description

Gates to Infinity

Clear Sunny Rain Hail Sandstorm The weather is clear and pleasant. In this weather, you can restore your HP naturally just by walking. The sun blazes. In this weather, you can't restore your HP naturally. It boosts the power of Fire-type moves and weakens Water-type moves. It's rainy and humid. In this weather, you can't restore your HP naturally. It boosts the power of Water-type moves and weakens the power of Fire-type moves. It's cold and hailing. In this weather, you can't restore your HP naturally. Also, all Pokémon, except Ice types, keep taking damage! The status returns to normal when you go to the next floor. A sandstorm rages. In this weather, you can't restore your HP naturally. Also, all Pokémon, except Ground, Rock, and Steel types, keep taking damage. Sp. Def of Rock types goes up.

Super Mystery Dungeon

Clear Sunny Rain Hail Sandstorm Harsh Sunlight Heavy Rain Strong Winds The weather is clear and pleasant. In this weather, you can restore your HP naturally just by walking. The sun blazes. If you don't do well with this weather, you can't restore your HP naturally and will keep taking damage. It boosts the power of Fire-type moves and weakens Water-type moves. During this weather, Pokémon won't get frozen. It's rainy and humid. This weather boosts the power of Water-type moves and weakens the power of Fire-type moves. The floor will be defused. It's cold and hailing. You can't restore your HP naturally and will keep taking damage unless you are Ice type. Sand blows really hard. You can't restore your HP naturally, and you'll keep taking damage unless you are a Ground, Rock, or Steel type. It boosts the Sp. Def of Rock-type Pokémon. The sunlight is extremely harsh. If you don't do well with this weather, you can't restore your HP naturally and will keep taking damage. It boosts Fire-type moves and nullifies the effects of Water-type moves. During this weather, Pokémon won't get frozen. Torrential rain falls and soaks you to the bone. It boosts Water-type moves and nullifies the effects of Fire-type moves. The floor will also be defused. Very strong winds are blowing. Flying-type Pokémon won't have weaknesses.

Rescue Team DX

Clear Sunny Rain Hail Sandstorm Extremely Harsh Sunlight Heavy Rain Strong Winds Rainbow Light The sun blazes. The power of Fire-type attacking moves goes up, and the power of Water-type attacking moves goes down! During this weather, Pokémon won't get Frozen. It's cold and hailing. Unless you are Ice type, you can't restore your HP naturally and you'll keep taking damage. Sand blows really hard. Unless you are Ground, Rock, or Steel type, you can't restore your HP naturally and you'll keep taking damage. The Sp. Def of Rock-type Pokémon is boosted. The sunlight is extremely harsh. It boosts Fire-type attacking moves and nullifies the effects of Water-type attacking moves. During this weather, Pokémon won't get Frozen. Torrential rain falls and soaks you to the bone. It boosts Water-type attacking moves and nullifies the effects of Fire-type attacking moves. The floor will also be Defused. Very strong winds are blowing. The changing weather eliminates all of the Flying type's weaknesses. It's a cataclysm! While the master of this dungeon is bathed in light, its HP will be restored and its bad statuses will be healed.

Appearance

Sunny

Fog

Snow

Rain

Hail

Sandstorm

Cloudy

Pokémon GO

Weather status screen showing the current weather and effects on boosted types

Various weather effects appear in Pokémon GO, intended to reflect the actual weather of the player's location. Weather in each local area is updated every hour, on the hour, via Accuweather. Different weathers affect certain Pokémon types, and effects include:

Increasing the power of moves of boosted types in Gym and Raid Battles by 20% (rounded down to the nearest integer)

Wild Pokémon with a weather-boosted type... spawn more frequently award 25% extra Stardust when caught are guaranteed at least 4 IVs in each stat. are five Power Up levels higher than normal (capped at 35 instead of 30 for wild Pokémon, 25 instead of 20 for Raid Bosses, and 13 instead of 8 for Shadow Pokémon) have a swirling, white aura in the overview map

The form of wild Castform depends on the weather

The form of wild Cherrim depends on the weather; they appear in Sunshine Form during sunny/clear weather and Overcast Form otherwise

Cacnea's evolutionary family exclusively spawn in sunny/clear weather

Lotad's evolutionary family exclusively spawn in rainy weather

Weather bonuses are not applied for Pokémon encounters from Field or Special Research and GO Battle League rewards. Bonus damage is also not applied in Trainer Battles, including Team GO Rocket battles. Exceptions to weather-restricted wild spawns may occur for certain in-game events.

If a weather change causes an existing wild Pokémon spawn to gain (or lose) its weather boost, then its Power Up level will be raised (or lowered) by 5 and its IVs will be re-rolled. However, any weather-dependent forms will remain the same.

Trivia

Four snowflakes falling that goes unused.

The Weather Institute in Hoenn is dedicated to the study of weather. It is said to have created Castform, a Pokémon that changes with the weather.

The Generation III core games internal data contains an unused overworld weather effect of four falling snowflakes.





In other languages

Language Title Chinese Cantonese 天氣 Tīnhei Mandarin 天氣 / 天气 Tiānqì French Climat German Wetter Indonesian Cuaca Italian Condizione atmosferica Korean 날씨 Nalssi Malaysian Cuaca Portuguese Brazil Clima (Pokémon GO, anime, manga)

Tempo (manga) Portugal Tempo * Spanish Tiempo atmosférico Thai สภาพอากาศ Saphap akat Vietnamese Thời tiết







