Lots of students go out a lot. I wouldn't worry about never having someone to go out with, that's for sure. Particularly people with <10 contact hours. 3-4 nights a week was pretty average for a lot of people I lived with in first year.
It depends what the "best" nights are in your area. Wednesday is a big night for sports at most places, but there's a particular favourite in my city for Wednesdays that a lot of people go to. That ends up being a weekly occurrence for a lot of people, and then sometimes mix it up by going out different nights to elsewhere.
As it builds up to exam time it gets a bit quieter, but I reckon most of the term is quite consistent.