The gateway also reports 156,000 tonnes of cargo were handled, an increase of 4.1% on last year, while aircraft landings and take-offs decreased by 4.2% to 28,360.
During the month, traffic to Northeast Asia, South Asia and Southwest Pacific improved, that was offset by a decline in Southeast Asia travel.
There were double-digit increases in passenger movements notably between Singapore and Hong Kong, however, travel to and from Bangkok continued to decline, down 11% on-year.
For the period of January to August 2014, 35.84 million passenger movements were recorded at Changi, which was 1.1% more than the corresponding period in 2013.
Aircraft movements rose in tandem by 1.3% to 228,240, and airfreight shipments grew 0.7% to 1.22 million tonnes for the same period.
New concessions have also opened in the month including popular doughnut chain Krispy Kreme in the departure hall in Terminal 2, while in Terminal 3 curry puff specialist Curry Times has opened up.
Three new retail and dining outlets have commenced operations in the transit areas of Changi.
French clothing company Lacoste opened its second Changi store in Terminal 3 while The Coffee Bean and Tea Leaf established its fourth and fifth outlets at Changi, in Terminals 2 and 3.