Yeah, it's cold. Name another actual similarity besides the aesthetics of longboats and pointy helmets. Can you do it?
Oh, and Sovengard. But that's just lazy fan service.
Let's see... We have the physical apperance, both inhabitants have evolved from their enviroment. We also have the savage-side. The early Scandinavian's plundered and murdered, I see that in the Nords aswell. Nord in Norwegian means North, I don't see how that fits, but just brought it along, anyways
And... Scandinavia is more like Skyrim than, let's say, Uganda or China. Don't you think?