I also live in Helsinki and climb a lot through summer. I climb mainly traditional routes up to around Finnish 6- (Norwegian 6). You're welcome to come out with us if you are interested. If you haven't done much trad climbing and would like to learn I'm quite happy to show you. I've been climbing since 1990 all around the world, and I'm still here so seem to be reasonably safe and competent.
Me and various mates also go bouldering quite often in the evenings if you are interested. I'm not very good but enjoy it and have a mat which is a good way to make yourself popular.
My Finnish is lousy so if you want to practice your Finnish climb with someone else, but my English (being English) is brilliant!
If you are interested send me an email at Toby_Archer(at)yahoo.co.uk
BTW, where are you from in Norway? I have done three week-long trips to Lofoten in past summers, and three of winter trips to Lyngen.