I am up here in the North Carolina mountains. Very humid. Even worse, every other night the fog comes up from the French Broad River and surrounds the house. This immerses your firewood stack in 100 percent humidity.
So I went for zero ventilation here. Don't want that fog running over my wood at night.
No windows no vents.
The little woodshed sets out in the sunlight all day. Water vapor goes through the wooden walls and floor. The massive roof overhangs keep the rain off of the walls and the sun shines on the walls throughout the day.
I am drying firewood to 17 percent moisture content in 6 months in the little woodshed.
It is just 8 feet by 12 feet but by God it holds a lot of wood. Got it stacked 7 feet high in there.