In SH3 we had permanent storms and bad weather, but now in SH4 we have dominantly fair weather. Apparently this is unconnected to the latitude (Region) where you are playing, and I now find myself sailing out of Bergen in December with fair weather, calm seas....and bright sun
Isn't there something that can be done to get the proper overcast weather during the whole winter in northern latitudes?

Not permament storm, but overcast a bit of hard seas is the normal status in the ice-cold North Sea and North Atlantic during a good part of the year :hmm: