also: あまかぜ
noun
rain and wind; driving rain; the elements
Refers to the combination of rain and wind, often implying harsh weather. Can be used literally or figuratively for exposure to the elements.
雨風が強くなってきた。
The rain and wind are getting stronger.
彼は雨風をものともせずに歩き続けた。
He kept walking, undaunted by the rain and wind.
風雨 (ふうう) also means 'wind and rain', but is more formal and literary. 雨風 is the common, everyday term.
Compound of 雨 (あめ, 'rain') and 風 (かぜ, 'wind'). The alternate reading あまかぜ uses the older combining form あま for 'rain'.