Meaning: It’s raining cats and dogs, It’s pouring rain
Literal translation: It’s raining ropes
Notes: I love the French expression il pleut des cordes because it’s so vivid. When it is really pouring, it does almost seem like the raindrops are joined together into long, twisty ropes stretching from sky to ground. The English equivalent is bizarre – why cats and dogs? Why not fish and frogs? At least they like the water.
Example:
C’est la saison des pluies au Costa Rica, et il pleut des cordes presque tous les jours !
It’s the rainy season in Costa Rica, and it rains cats and dogs nearly every day!
Synomyms: Il tombe des cordes, Il pleut/tombe des hallebardes
Mon École-French School 
that’s right, it’s a lovely expression , and me neither I don’t understand why cats and dogs in english ? but there may be a reasonable reason 😮
Thanks
🙂
You’re welcome ^^