“Clear as day”in other languages

Same idea, different pictures

English and Spanish choose the clearest things around: daylight, and water, más claro que el agua. Italian says non ci piove, it doesn't rain on it: a point so solid that nothing can spoil it.

German is the strange one: klar wie Kloßbrühe, clear as dumpling broth, which is usually cloudy. It was most likely said with a wink at first, and the joke stuck.