降雨(こうう)

こうう
noun
rainfall; precipitation
1. rainfall; precipitation
A formal, technical term for rain falling from the sky, used primarily in weather reports, scientific writing, and official communications rather than everyday conversation.
降雨(こうう)量(りょう)が少(すく)ない。
The amount of rainfall is low.
昨夜(さくや)の降雨(こうう)で川(かわ)の水位(すいい)が上(あ)がった。
The river's water level rose due to last night's rainfall.
気象庁(きしょうちょう)は今週末(こんしゅうまつ)にかけて広(ひろ)い範囲(はんい)で降雨(こうう)が続(つづ)くと予報(よほう)している。
The Meteorological Agency is forecasting continued rainfall over a wide area through this weekend.

A formal, technical term for rainfall or precipitation. Combines 降(こう) (to fall, to descend) and 雨(う) (rain).

USAGE:

  • Used primarily in weather reports, scientific contexts, and formal writing
  • In everyday conversation, 雨(あめ)が降(ふ)る (rain falls) is more natural
  • Often appears as part of compound expressions related to weather measurement

COMMON COLLOCATIONS:

  • 降雨(こうう)量(りょう): amount of rainfall
  • 降雨(こうう)確率(かくりつ): probability of rain
  • 降雨(こうう)予報(よほう): rainfall forecast
  • 集中(しゅうちゅう)降雨(こうう): concentrated rainfall, heavy localized rain
  • 降雨(こうう)日数(にっすう): number of rainy days

SIMILAR WORDS:

  • 雨(あめ): rain — the everyday word
  • 降水(こうすい): precipitation — includes rain, snow, sleet, and other forms
  • 豪雨(ごうう): heavy rain, torrential rain — specifically heavy, intense rainfall
general
Added 2026.4.3 7:11
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