You already mentioned the magic word - the wipers are NEW. That's the reason why they're noisy, from my experience.

I've noticed new wiper blades - Bosch, NWB, Denso - tend to require a period of breaking-in before they perform at their best. Within this break-in period they'll tend to judder or squeak across the wet windshield. For the most part it's normal and it'll go away as the rubber wears down its initial layer.

Bottom line is, just keep using them. The more you do, the sooner they'll shut up. HTHs