2007 Citroen C1 Car Windows Damp Inside Out Especially Weather Damp Raining

My car windows are damp inside (and out), especially when the weather is damp/raining. Is there a known reason for this. I have just had the pollen filter replaced, and the demisters still take a while to clear the windscreen and front side windows. The rear side ones do not clear at all.

Any ideas what the problem may be and how it can be rectified?

Thank you