>>1936913When warm, moist air hits a cool surface, the moisture will condense into droplets. A glass of ice water is a great example; the warm air in the room hits the cold glass, and the moisture in the air condenses into droplets. Go for a drive in a warm car on a cold day and your Windows fog up. It’s the same thing.
The inside of your tent is warm, and the moist air is hitting the cold tent walls at night. The solution is a more breathable tent.
>but won’t I be cold?Well you’ll be drier, so no, not really. Also this isn’t a problem in the winter as much as the summer, unless you live in the South (where it can be humid year round). A lot of the moisture is coming from your breath, but combined with high humidity it can be a big problem.
>floodingThat’s a matter of campsite selection. Stop camping in spots that flood.