It is raining here on the Wet coast and today I noticed the driver side floor mat is wet. Well, it was dry when I left my underground parking this morning but I parked it outside in the rain while I was at work. When I went for lunch, I noticed the floor mat on the driver side was wet and it looks like the centre of the puddle is right underneath the brake peddle.
The roof is closed and is not leaking from there.
Any idea where the water can be coming from?
I bought the car used back in May and it has been a pretty dry summer so I didn't get this problem till now.

TIA