What kind of rod is it - mid or tip flex? Beginner rods are not necessarily bad rods... I always have more trouble casting my 5wt full flex when there is any wind - but with the same conditions, I can make decent casts with a 5wt tip flex.
When I was at your stage, I cheated and over weighted the rod (I used the next higher weight line) - made it easier to keep my loop shape in winds.