Condensation issue

I don't know where ALL of it is coming from. I know some is coming under the walls both in the rear and on the side closest to the house. I also know it sweats even when it does not rain. It seems to be simple condensation and not pressurized water from underneath, as it only does it on days with really high humidity......which has been a LOT this year.

And of course "I" am no expert either, but I am just saying what I "see".