细雨 (xì yǔ) literally means 'fine rain' — 细 (xì) means 'fine', 'thin', or 'delicate', and 雨 (yǔ) means 'rain'. Together, they describe light, gentle rainfall with small, mist-like droplets that falls softly and steadily, often without wind or thunder. It evokes a calm, poetic, or slightly melancholy atmosphere and is commonly used in literature, weather reports, and everyday descriptions of spring or autumn weather.

This term emphasizes texture and intensity rather than volume: it’s not just 'light rain' but specifically rain so fine it seems to hang in the air like mist. It contrasts with heavier terms like 大雨 (dà yǔ, 'heavy rain') or 暴雨 (bào yǔ, 'downpour'). 细雨 frequently appears in idioms and imagery related to nature, gardens, mountains, and quiet rural or classical scenes — making it especially common in contexts involving plants, farming, or seasonal change.