Dampness behind dash footrest area.

As title.
I drive barefoot because i always wear flip flops, passed couple of days the footrest has been damp.
Had a quick look and it looks as if its the aircon pipes. Should they have condensation?

Is this normal? (apart from footwear situation :tongueout: )
 
I will have a look at that today if I can in work. I'm fairly certain it will be clear as I've not long done it. The moisture looks as if it is only on the aircon pipes though.