0211 GMT April 23, 2019
The data, along with earlier softer readings on trade and credit growth, reinforce consensus views that the world's second-largest economy is cooling but not at risk of a sharp slowdown yet, Reuters reported.
Industrial output rose 6.1 percent in August from a year earlier, the National Bureau of Statistics (NBS) said, slightly more than analysts had expected and a tick better than July.
But production of key goods including motor vehicles and transport equipment actually fell. Output of cars barely grew, while crude steel production increased by just a third of the pace in the previous month.
Retail sales rose 9.0 percent on-year. Analysts had expected a gain of 8.8 percent, unchanged from July.
Fixed-asset investment growth slowed to 5.3 percent in January-August from the same period a year earlier, weighed down once again by slowing infrastructure growth.
Analysts polled by Reuters had expected a reading of 5.5 percent, in line with the previous all-time low announced last month.
"The August activity and spending data were a mixed bag. On balance though, they do little to change our view that growth remains on a downward trajectory," Capital Economics said in a note, adding its own gauge suggested industrial output was much weaker than the official data.
Private sector fixed-asset investment rose 8.7 percent in January-August, compared with an increase of 8.8 percent in the first seven months. Private investment accounts for about 60 percent of overall investment in China.
Growth in infrastructure spending, a powerful economic driver last year, slowed again to 4.2 percent in the first eight months of the year, compared with a rise of 5.7 percent in January-July.
China got off to a strong start this year, but its economic outlook is being clouded by the escalating US trade dispute and cooling domestic demand, triggered in part by a regulatory crackdown on riskier financing.
Beijing is trying to accelerate infrastructure investment but analysts warn it will take some time for the benefits to kick in, with economic conditions expected to get worse before they get better.
China's state planner recently warned that the country's investment growth may weaken even further in the future and authorities should step up fiscal and financial measures to give it a boost.
In recent weeks, Beijing has told local governments to speed up the sale of special bonds to raise money for investments. Finance Minister Liu Kun told Reuters such bond issuance will blow past one trillion yuan by the end of the current quarter.
With Washington ratcheting up the trade pressure, Chinese policymakers have shifted their focus in recent months to easing credit conditions and shoring up business confidence.
In addition to ramping up spending, China is pumping liquidity into the financial system to bring down financing costs, cutting taxes and offering assistance to firms hit by the trade battle.
It is also encouraging banks to lend more to smaller firms, but a rising tide of bad loans and defaults is making lenders cautious, complicating the central bank's policy efforts.
Top officials have vowed they will not resort to strong stimulus as they have in past downturns, a policy choice that boosted growth but fueled a mountain of debt and systemic financial risks that regulators are still struggling to address.
But most economists suspect Beijing may start opening the taps wider in coming months if growth deteriorates sharply under the cumulative weight of US trade measures.
ING's Iris Pang believes the scale of the fiscal stimulus this year and next will be equivalent to the massive support the government rolled out during the global financial crisis.
"Expect a total five trillion yuan fiscal stimulus for the rest of 2018, and another five trillion yuan of fiscal stimulus in the first half of 2019," she said in a recent note.
"Then the scale of around 10 trillion would be equivalent to then four trillion yuan stimulus in 2009 (GDP rose more than two times during this period)."