A sudden, typically heavy shower in the late afternoon or evening (common in summer); an evening shower.
夕立が降って、洗濯物を急いで取り込んだ。
A sudden shower came, so I hurried to bring in the laundry.
海辺で夕立に遭って、みんなで軒下に避難した。
We were caught by an evening shower at the beach and took shelter under the eaves.
晴れていたのに夕立が来て、急に暗くなった。
Although it had been sunny, a sudden shower arrived and it quickly got dark.