Sound of Sweden
This opens the full video on YouTube, where the picture and sound quality are best.
Rain Sounds for Sleep — 10 Hours
Ten hours of rain against a window — the classic, textured version for falling asleep fast or unwinding through a full night.
This is the plainest of the three rain recordings, and that's the point — rain against an ordinary window, with the small variations in intensity you'd get from real weather rather than a processed loop.
Why it works
The slight rise and fall in intensity is what separates real rain from a synthesized rain sound — your ear doesn't lock onto a pattern the way it would with something perfectly even, so it's less likely to become the thing keeping you awake.
How to use it
The most straightforward choice if you just want rain, with nothing else layered in — good as a default overnight track, or during the day when you want a familiar, unobtrusive backdrop.