Rain is recurring weather event in The Legend of Zelda series. Typically rain is often found during scenes that are intense or dramatic. In the case of the game Breath of the Wild it is a randomly occurring weather status. Rain also may be summoned by a song like in the games Ocarina of Time and Majora's Mask.
Role in the Series
Rain as a Theme
In most instances rain does not affect Link directly and is only present to set the tone of a scene or area. Moments that utilize rain as a tone setter include, but are not limited to, the opening sequence in A Link to the Past, when Midna's Lament is playing in Twilight Princess, and various moments during Wind Waker. Other games may also include rain as ambiance to help define an area.
Rain as a Gameplay Element
Ocarina of Time
In Ocarina of Time, playing the "Song of Storms" on the Ocarina of Time will summon rain and trigger certain events, such as filling the Desert Colossus oasis. Rain and wind will appear even if the Song is played indoors.
Clock Town, the Swamp Fishing Hole and the Ocean Fishing Hole will experience rain on the Second Day from 7AM to 12AM. Rain will cause the Termina Loach to swim near the water's surface and the Goodta Goby to swim deeper underwater, making them easier to catch with standard lure and sinking lure respectively.
The Wind Waker
In The Wind Waker an endless night occurs when Ganondorf casts a curse across the Great Sea, resulting in a thunderstorm that creates choppy seas and strong winds. Visibility is reduced as the world is cast in darkness. On Outset Island all of the residents will hide indoors as Chuchus and Miniblins have appeared across the island. The Ghost Ship will always appear in its pre-determined location.
Breath of the Wild
In Breath of the Wild, rain will randomly occur in warmer regions. Rain makes climbing surfaces become slick, which makes them difficult to climb as Link will periodically slip and fall. Rain will immediately extinguish any exposed fires, with the exception of Ancient Flames. Flames that are sheltered from the rain are not affected. Empty shelters can be found alongside roads, and Link can create temporary shelters on waterfalls using the Cryonis rune, as rain will not penetrate the blocks it creates.