The Associated Newspapers' title's average daily circulation was 278,889 copies -- a drop of 4.64% from July.
The Standard only slightly decreased its bulk distribution from 126,790 in July to 126,403 copies in August.
Its six-month average circulation is up by 5.94% year on year to 288,719.
City AM, the free business daily, was also affected by the last month of summer although it reduces its print run during the main holiday periods. Its circulation dropped 5.21% month on month to 83,459 copies.
The title's six-month average is down slightly by 0.33% year on year to 96,093.
Freesheet thelondonpaper stayed fairly static. Its circulation rose 0.03% to 500,239 copies during August and its six-month average is up by 0.87% year on year to 500,526.
Ian Clark, managing director of the News International title, again issued fierce criticism of the Standard's ABC performance, saying the paper doesn't know what it is.
"Whilst thelondonpaper is now consistently distributing over 500,000, the Standard has become completely schizophrenic. It doesn't know if it is a paid-for, a free or indeed an inflight magazine.
"Bulks represent a record 45% of circulation and can't hide that their actual sale is down 16% to a record low of 152,486. With over 100,000 bulks at airports, it seems that they have ambitions to be the equivalent of an inflight magazine."
Its rival, London Lite, dropped by 0.26% month on month to 400,513. However, the paper's six-month average is up by 0.31% to 400,283 copies.
Metro's London circulation fell 0.66% to 742,649 copies, while its six-month average was up 36.16% to 745,819 copies.
Finally, Metro's UK circulation dropped 0.28% in August to 1,355,412 copies. The morning freesheet's six-month average is up by 22.03% to 1,358,119.