When it rains it should be OK
The right side of the vents are right over the engine plastic so that is OK. The left side is over the small open part right next or over my tube for my Short Ram Intake
that should also be fine too.
I have a friend with a open Hood
scoop for his Celica and he says that rain never goes in no matter how hard it is raining. I think he is lying, but the engine may get so hot that the water just vaporize when it enters.