I was in Germany and Switzerland in the Alps with my canon gear and it was fine.
If you expect to take your gear from extreme weather conditions, say from normal room temps to freezing or below--when coming back into warm weather, stick your camera lenses in a sealed ziplock bag to prevent condensation from building up on your lens. After the lens has warmed up to room temp--should take an hour or two, pull it out and let it and the ziplock bag air out (so you can shoot again!).
I was in Sweden and Finland in the dead of winter in temps well below freezing and using the ziplock bag trick, I had no issues.