I hope this isn't a repeat of a past thread, there didn't seem to be from a brief search. I've seen this theme talked about, but not in a focused area.
My example being NHDTA-551, which features a variety of situations. A wife being seduced while her husband hides outside from the rain in a stranger's home, a girl at a market, random strangers both waiting for the rain to let up.
These themes are good, I also thought about perhaps people having left bars, caught in the rain, then drunkenly seduced.
The precise plot doesn't matter, any films fitting the rain theme are welcome.
I also know of IENE-584, haven't seen yet, but looking for it presently and will report back on it later.
(screens are from the NHDTA title~)