I doubt condensation is the cause.
Boat is in the slip so it's not being forced into the boat.
Cockpit locker is actually pretty dry and no evidence of water intrusion there.
We're in brackish water (Chesapeake Bay) Bilge water just tastes vile.
I am 99% certain it's coming in from below. I can't imagine getting this much water from a poorly bedded deck fitting. Plus no signs of water tracks.