Why does the floor on the driver's side get wet when it rains?
Check the inner door seals and weatherstripping. Also could be coming in from blocked sunroof drains, if you have one.
I had this problem and after trying many other things I did what Tom suggest in his answer above. I checked them by looking and they all LOOKED good. It wasn't until I actually removed and cleaned and put back that the rain stopped getting on the passenger's side floor. It was by accident that I did that step but glad, I would have never figured. During the winter I locked my keys in the car and called AAA. The driver went in on side of leak between window and door jam and just moved the strippiing or whatever and caused the leak I think. Good luck
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