The PMI reading, given between 0-100, measures activity in the sector - anything above 50 signals growth, while anything below means contraction.
New contracts predominately came from the domestic market, although exports remained strong, if down on July's near-record high.
Manufacturing output declined to 54.3 from 56.3, though some survey respondents reported having a greater number of projects in the pipeline.
The strongest euro exchange rate in two and a half years did little to dent demand for French-made goods as the flow of new orders and backlogs of work grew, the survey showed.
The manufacturing sector slumped to its lowest level in July - its lowest mark since February 2009 - dragged down by disruptions to business activity following the introduction of GST.
USA retaliates against Russian Federation ordering closure of consulate and annexes
President Donald Trump said on Twitter that "talking is not the answer" when it comes to dealing with North Korea. Moscow forced the cut in American diplomatic staff earlier this year in retaliation for USA sanctions.
Rob Dobson, a director at IHS Markit, which compiles the survey, said: "At the moment, the survey data suggest that the manufacturing economy remains in good health despite Brexit uncertainty, and should help support ongoing growth in the economy in the third quarter". Purchase price inflation accelerated for the first time in seven months during August.
China posted stronger-than-expected economic growth of 6.9 percent in the first half, fueled by a year-long construction boom, resurgent exports and robust retail sales.
Furthermore, the rate of growth was little changed from July's five-month high.
Prime Minister Narendra Modi's shock move last November to scrap high-value banknotes late past year has continued to weigh on overall economic activity. The rate of job creation was the highest in three years.
Supply shortages put upward pressure on prices and there were further reports of capacity constraints.