Sunny Day (move)

Sunny Day (Japanese: にほんばれ Clear Sky) is a non-damaging move introduced in Generation II. It has been TM11 since Generation II.

Generation II
When this move is used, the sunlight will brighten the field. This effect will last for 5 turns. This clears any other type of weather and is usable even when it's already sunny.

While Sunny Day is in effect, the base power of moves will be increased by 50%, and the base power of  moves will be decreased by 50%. In addition to this, the moves, , and will recover twice as much HP as under clear conditions, and  will not require a turn to charge. The accuracy of is also lowered to 50%.

Generations III and IV
This move now fails when the weather is sunny.

,, and will now instead recover ⅔ of the user's HP in harsh sunlight. Additionally, (due to its Ability, ) and  become Fire-type.

If a Heat Rock is held when Sunny Day is used, the duration of sunlight lengthens from 5 to 8 turns. Additionally, the following Abilities will have the effects listed while the sun is shining:
 * Pokémon with the Ability will have their  doubled.
 * Pokémon with the Ability will lose ⅛ of their maximum HP at the end of each turn
 * Pokémon with the Ability will raise the team's  and  by 50%
 * Pokémon with the Ability will have their Special Attack raised by 50% and lose ⅛ of their HP each turn
 * Pokémon with the Ability will be immune to being inflicted with non-volatile status conditions

Sunny Day can also be used as part of a Pokémon Contest combination, causing a Fire-type move (other than itself) as well as certain other moves (,, , and ) to have their base appeal points doubled if used in the next turn.

Generation V onward
now raises the user's and  by two stages instead of just one. 's accuracy will be lowered, similarly to. will never fail to restore a Berry.

If heavy rain, extremely harsh sunlight, or a mysterious air current is present, Sunny Day will fail.

While Sunny Day is in effect, will not require a turn to charge.

Sunny Day can also be used as part of a Contest Spectacular combination, causing certain moves (,, , , and ) to give an extra three appeal points if used in the next turn.

If powered up by a Firium Z into Z-Sunny Day, the user's stat is raised by one stage.

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In other languages
Sonnentag Día soleado Zénith Giornodisole にほんばれ 大晴天（招式）