.
If you have screen bottom, you need not upper ventilation
do not ventilated air inside the gap of inner cover and rain cover.
That is worst you can do.
If you need upper ventilation, make a finger size hole in front wall. Round shape is the best.
If the inner cover has moisture because of condensation, add insulation.
Condensation happens on coldest surfaces.
I have here now -20C and condensation of respiration moisture will happen inside the hive and there are more or less snow inside. When the weather turns milder, the snow inside will melt and drop onto bottom. Nothing happens to bees.
One thing more: before wintering deminish the wintering room to minimum. So the hive box is warmer and that changes the relative moisture better to bees.
Of course, the heat is friend of bees.