Have you brought a bike over? I know a couple of expats here who are still riding in the wintery conditions.
this group are a good bunch… https://www.facebook.com/events/1410880559151328/
as for tourist sites, well, it’s chilly over here now. If you want to do some sight seeing, i’d recommend…
-Suomenlinna (windy fortified island)
-kaisla pub (near the railway station)
-Kallio. It’s an area with a fairly high (for finland) range of bars and suspect thai massage places
-walk up the olympic tower, close to the olympic stadium
-Kallionkirkko (nice church in Kallio)
-Temppeliaukion kirkko (church built into a rock face. Very pretty/minimalist)
-botanical gardens in Kaisaniemi (http://www.luomus.fi/english/exhibitions/botanicgarden/, visit the Palm House indoors)
Finnish beer is generally awful, although there are good brews if you persist and visit places such as Kaisla. Saying that, a majority of the local beer on offer there is from Sweden, Estonia, Denmark, etc.
Also, try to use Finnish (even words like Hei=Hello, kiitos=thank you) if possible. They really appreciate it.
Avoid the central railway station area after dark. It’s drunk/hobo/fight/druggie/psycho-magnet.