"aptal ıslatan" (the rain that wets a fool)

Teşekkürederim. Hangsi siz kulaniyousunuz?

I love this Turkish expression. So Turkish!

I don't know it much but I think, drizzle is not equal to ahmak ıslatan. Drizzle is just çiselemek, but ahmak ıslatan is a type of this rain.

There is another like it:
öküz öldüren soğuğu
a cold climate which kills bulls

Oh, I think you are right. Perhaps a 'light drizzle' or a fine mist. Just enough for a fool to think he won't get wet.