I had a chance to work on a project for 4 months and got to work on wireframes and some style tiles. Did not get a chance to create mockups so I was wondering if it is still worth to show the wireframes in my portfolio?
If you feel like you're a bit short on material for your portfolio, then yes, add it for sure. It demonstrates an important part of the process. Make sure you annotate well though.
As you build up more projects you can replace it.