That followed an upwardly revised 0.4 percent gain in July, which was previously reported as a 0.1 percent rise.
Retail sales are lagging other relatively bullish economic data such as manufacturing, housing and employment. That has raised concerns that growth this quarter could fall below the anticipated 3 percent annual rate.
August's fairly solid retail sales report and upward revisions to July's figures should ease some of those fears. The economy grew at a 4.2 percent pace in the second quarter.
In August, receipts at auto dealerships jumped 1.5 percent after advancing 0.6 percent the prior month. While sales at service stations fell 0.8 percent, that reflected declining gasoline prices, which should free up income and support discretionary spending in the months ahead.
Sales at clothing retailers gained 0.3 percent and receipts at sporting goods shops increased 0.9 percent.
Sales at electronics and appliance stores rose 0.7 percent, while receipts at building materials and garden equipment suppliers rebounded 1.4 percent. Sales at non-store retailers, which include online sales, edged up 0.1 percent.
In a separate report, U.S. import prices recorded their biggest drop in nine months in August as a sharp decline in the cost of petroleum products eclipsed rising food prices, keeping imported inflation pressures subdued.
The Labor Department said import prices fell 0.9 percent last month after slipping 0.3 percent in July.
Economists polled by Reuters had forecast import prices declining 0.9 percent in August. In the 12 months through August, prices dropped 0.4 percent.
Sluggish global demand and a relatively strong dollar are dampening imported inflation.
That and sluggish wage growth have translated into fairly benign domestic price pressures, which should buy the U.S. Federal Reserve a bit more time to maintain its very accommodative monetary policy stance.
Imported petroleum prices declined 4.4 percent in August, the biggest drop since last November, after falling 1.7 percent the prior month. Imported food prices gained 0.6 percent after rising 1.1 percent in July.
Import prices excluding petroleum slipped 0.1 percent in August. They were flat in July.
The Labor Department report also showed export prices fell 0.5 percent in August after edging up 0.1 percent in July. In the 12 months through August, export prices rose 0.4 percent.