Took my bike license 6 months ago and got a 650 Transalp and been driving in then, in rain or sun. Done quite a few offroad on wet and mud and just love it.
It is not the same to ride in wet or dry weather, but you really learn how to drive when it is wet. You need extra attention to listen to the bike whispering it's limits.
The danger is on those white road marks and metal surfaces, cause they are very very slippery. So, in the rain, I just take my time and learn to enjoy even more the ride.
Keep it safe.