They're very difficult to predict exactly but since there's little moon then anyone with clear skies can be optimistic.
"On a night without a shower, you will see perhaps five meteors an hour if you watch continuously. At the peak of the Perseid shower under very dark country skies, you should expect to see 90 meteors an hour if you concentrate on looking straight overhead. That's about three meteors every 2 minutes."
http://www.space.com/30230-perseid-m...k-webcast.html
I guess in norway you still have longer daylight hours than most of us which might complicate it a bit. Good luck!
WARNING: that link page seems to contain a video report which auto-played in my browser so sound off if you're at work