Wiktionary
scattered shower
n. (context chiefly British English) Any of a series of showers of rain, whose number, location and timing are impossible to predict
Usage examples of "scattered shower".
The presence within which had been Didir became a scattered shower of sparkling half-thoughts, fleeting memories.
Temar put himself between Allin and any hostile arrow but the scattered shower had all but spent its force by the time it clattered among the masts and ropes.