There are a lot of things that affect the durability of a wax. A simple answer to your question is no. (IMHO) under best conditions it will probably not last more than two months. There are much better products out there.
A wax like Meg's 16 or Collinite (spelled wrong I'm sure) could give you (IMHO) 3-5 months depending on the exposure level to the paint. IMO that's as good as it gets. You may get better with a good sealant but tha's another thread.