夕立

1. Origins, structure, and basic meaning

• Structure: 夕立（ゆうだち） means a sudden heavy shower, typically on a summer afternoon or evening.
• Basic usage: Use it for being caught in rain on the way home or briefly taking shelter until it passes.

2. Common pitfalls and similar expressions

• A shower word with a time-of-day association
  • にわか雨 broadly refers to rain that starts suddenly.
  • 夕立 also carries an association with summer afternoons or evenings.