A high noise level during the summertime on 80m is totally normal. If I don't have an S9 noise level on 80, especially in the summer months, I wonder if my antenna is connected!
However, it does pay to be sure that the noise you're receiving is all really summer static and not locally generated. You can't do much about our natural QRN (lightning static, solar noise, etc.) but you can surely take actions to reduce man-made noise (sometimes), and this bears investigation.
I am also currently using a vertical antenna and cannot wait to get a horizontal loop up for operating 80m this coming winter! I, too, have found a horizontal loop is usually a lower-noise antenna (for receiving) and I, too, am tired of having stations on 80m tell me that I'm loud and clear when I can hardly hear them!
73 de Steve WB2WIK/6