I use a bike poncho, it covers the legs, too, and limits sweating because it is open underneath. Decathlon sells them for cheap, and them works. There is also normal colors, but I prefer to be absurdly visible (I want to see who says "I didn't seen him 🙂)
Every time I use it, I'm amazed I'm dry underneath (the face gets wet).
In any case, even if I don't wear it, I'm unlikely to get soaked, when rain is not that strong. We are not made of sugar!
crosspostated from: https://social.tchncs.de/users/lgsp/statuses/115484700218126774
Confirmed. A few weeks ago I did a multi-hour ride across a mountain pass in driving rain, protected only by Decathlon's cheapest raincoat (the one that stuffs into its own pocket). Stayed bone dry.
Well, except shoes, which were sodden of course.