UPDATE 2-China aluminium output slips in August amid smelter outages

* China Aug aluminium output -0.3% y/y at 2.97 mln T- stats bureau

* Production slips from July on outages at Hongqiao, Xinfa

* Daily output rate at lowest since March - Rtrs calculations

* Non-ferrous output at 4.91 mln T, second-highest on record (Adds analyst comment, year-to-date figures)

BEIJING, Sept 16 (Reuters) - China’s primary aluminium output in August fell 0.5% from the previous month, according to data released by the National Bureau of Statistics (NBS) on Monday, as unexpected outages at two key smelters dented production.

China, the world’s top aluminium producer, churned out 2.97 million tonnes of the metal last month, the data showed.

That was down from 2.984 million tonnes in July, the second-highest monthly total on record, and down 0.3% from a year earlier, the bureau said.

According to Reuters calculations based on NBS data, output averaged around 95,800 tonnes per day in August, the lowest daily rate since March, and down from about 96,260 tonnes per day in July.

August saw two incidents hit aluminium production at China’s top two private-sector smelters, China Hongqiao Group and Xinfa Group, sending Shanghai aluminium prices well above the 14,000 yuan ($1,978) a tonne mark often considered a break-even for producers.

Hongqiao’s smelting premises in eastern China’s Shandong province were hit by flooding over the weekend of Aug. 10 to 11 after Typhoon Lekima tore through the region, with the company ultimately saying its annual production would decrease by 200,000 tonnes to 300,000 tonnes as a result.

Around one week after the Shandong flooding, Xinfa shut down around 500,000 tonnes of annual smelting capacity at a plant in the northwestern Xinjiang region following an explosion.

In the first eight months of 2019, China produced 23.47 million tonnes of aluminium, up 1.4% year-on-year.

The current aluminium price provides an incentive for smelters in China to raise production moving into the fourth quarter but new ramp-ups, in southern Guangxi and Yunnan, are proving slower than expected, said Jackie Wang, an aluminium analyst at CRU.

Wang does not expect smelters in northern China to be ordered to cut back production this month ahead of 70th anniversary celebrations of the founding of the People’s Republic of China in Beijing on Oct. 1 but does envisage some impact on downstream aluminium-processing plants.

“It’s really costly and time-consuming for smelters to shut down and re-open,” she said.

Meanwhile, China’s production of 10 nonferrous metals - including copper, aluminium, lead, zinc and nickel - in August rose 0.3% from July to 4.91 million tonnes, its second-highest on record. That was also up 4.4% from a year earlier, the bureau said.

The other non-ferrous metals in this group, whose January to August output was up 4.6% year-on-year at 38.63 million tonnes, are tin, antimony, mercury, magnesium and titanium.

Reporting by Tom Daly; editing by Christian Schmollinger