A safety tip for rain: If you have disk brakes and are riding downhill, remember to tap the brakes regularly every 3-4 seconds. This will keep the discs hot and will cause water droplets to evaporate. If you don’t do this, the discs will get humid and when you try to stop it will multiply your stopping distance considerably. I’ve had wet discs with Shimanos, Tektros, Maguras.... They all lose efficiency in prolonged rain. By tapping the brakes the discs stay so hot that water evaporates almost instantly. Just to be clear, don’t touch your discs physically right after a long downhill ride. You’ll most likely burn your hands.... I’ve been there.
Try it in a safe place, when rain is moderate. If it’s pouring bucketloads it works less well.