Is it ok...
In Seattle we have to ride in the rain dang near year round or we don't ride at all.
Some tips would be,
don't put your boat away with the engine compartment soaking wet. Eventually it will kill your starter and alternator. Use a space heater to dry it out for a couple of hours first.
Be very careful not to get your amps or head unit too wet. They can fry or eventually rust on the internals even if they're marine units.
Always pull out all of your cushions and wipe them down along with any wet areas under them.
Never ever ever wipe down your boat immediately after driving down the road while it's raining. This will kill your wax job and put little scratches all over in your gel. If I get caught in the rain while towing I wait until I get home and use a wax blend soap with a terry cloth to remove the dirt.
Hope this info helps.