Neutral term for rain or precipitation, often used in weather forecasts and reports.
Rainfall is expected over a wide area tomorrow.
The amount of rainfall is less than average.
There is a lot of rainfall in this region during the summer.
It has been raining continuously since yesterday.
We were hit by heavy rainfall during the match.
降水 covers all forms of precipitation such as rain, snow, and hail, whereas 降雨 refers specifically to rain.
降雨 is a formal, written term used in weather reports and technical contexts, while 雨が降る is the natural everyday phrase for saying it is raining.
降雨 is a formal, technical term for rainfall used in scientific or official weather reports, whereas 雨降り is the everyday word for rainy weather.
降雨 refers to rainfall, while 降雪 refers to snowfall; the two are easily confused because of their parallel formal structure.
rainy season; rain period
rainforest
amount of rainfall; rainfall amount
artificial rain; rainmaking; cloud seeding
Compound of 降 (descend, fall) and 雨 (rain). The reading is on'yomi.