Ryunosuke Akutagawa’s In a Bamboo Grove has been dramatised for the radio by the BBC. The short story, of course, worked as the primary source text for Kurosawa’s Rashomon. I have not had the time to listen through the entire show, but it would seem that the dramatisation makes use of some of the narrative devices that Kurosawa used to tell the story. Also the rain seems to be there.
The 45-minute show was apparently broadcast earlier this week in the “Afternoon Play” series, and can still be streamed from the BBC website. In a Bamboo Grove was Wednesday’s programme, and if I remember correctly BBC allows streaming of its shows for one week after the original broadcast, so in case you wish to take a listen, I suggest you act soon.