noun
rainy area; area of rainfall
Meteorological term used in weather reports and forecasts to refer to a region where rain is falling or expected.
雨域は次第に東へ移動するでしょう。
The rainy area will gradually move eastward.
気象レーダーで雨域の広がりを確認できます。
You can check the extent of the rainy area on the weather radar.