* Manufacturing growth in the euro zone slows in August
* British factories buck trend, supported by weak sterling
* Chinese manufacturing remains in low gear
* Japan factories show signs of steadying, but still contracting
* Rest of Asia, South Korea PMI slump; others mixed (Adds European data)
By Jonathan Cable and Shri Navaratnam
LONDON/SINGAPORE, Sept 1 (Reuters) - Manufacturers across Asia and Europe showed few signs of returning to health in August, as demand remained fitful at best, although British factories bucked the global trend, surveys showed on Thursday.
Britain's manufacturing rebounded from the shock of June's vote to leave the European Union, helped by a boost to exports from sterling's post-Brexit slump.
Recent data have shown consumer demand holding up, and Thursday's survey suggests manufacturing, which accounts for 10 percent of Britain's economy, is weathering the impact of the vote better than feared.
"The plunge in sterling is boosting the UK's competitiveness, which is helping to support export orders, while the aggressive stimulus from the Bank of England and the smooth transition of political leadership has also helped calm immediate fears for the economy," said James Knightley at ING.
"Nonetheless, the risks of recession have not disappeared and with surveys still suggesting a significant pullback on hiring and investment intentions we remain concerned about the prospect of a weaker performance around the turn of the year."
The UK Markit/CIPS Purchasing Managers' Index (PMI) jumped to a 10-month high of 53.3 in August after tumbling to a three-year low in July following the referendum. A reading above 50 indicates growth.
August's monthly surge was the joint largest in the manufacturing survey's near 25-year history and beat all forecasts in a Reuters poll of economists. After the release, the pound jumped over a cent to $1.3250, putting it on course for its best day in two weeks.
However, survey compiler Markit said reduced sales to Britain were partly to blame for slowdown in orders in the neighbouring euro zone.
Manufacturing growth in the currency bloc slowed during August. Much of the expansion remained focused in the north, and the survey hinted at a further slowdown this month.
Germany, the Netherlands and Austria again provided the main power. France and Italy showed declines, Greece stagnated and both Spain and Ireland saw their worst growth since mid-2013.
Markit's PMI for the bloc dipped to 51.7 in August from 52.0, below a flash estimate of 51.8. An index measuring output came in at 53.3, below July's 53.9.
Manufacturing growth in the United States also eased last month, data are expected to show later on Thursday. reuters://realtime/verb=Open/url=cpurl://apps.cp./Apps/econ-polls?RIC=USPMI%3DECI
Coming a week after the U.S. posted sluggish second-quarter growth, the uninspiring manufacturing surveys may give Federal Reserve Chair Janet Yellen pause before a Fed meeting on Sept. 20-21 to decide whether to raise interest rates .
In China, the world's second-biggest economy the official PMI ticked up to 50.4 in August, compared with the previous month's 49.9. But the private Caixin PMI, which covers a greater share of smaller firms, showed activity stagnated last month.
"While it is encouraging that manufacturing activity appears to be stabilising, there is a risk that this is a 'calm before the storm' moment for the sector," said Danae Kyriakopoulou at Cebr.
With central banks almost exhausting their monetary policy support, governments have increased fiscal stimulus. Underlying demand in many of Asia's export-reliant economies remains weak, however.
In Japan, manufacturing showed signs of steadying, but the IHS Markit/Nikkei PMI was still in contraction at 49.5 in August. Although output increased for the first time in six months, export orders continued to fall, bolstering expectations the Bank of Japan will need to offer more stimulus.
The pressure on Japanese policy makers was underscored by separate data showing Japanese business expenditure fell in April-June from the previous quarter.
Conditions were even gloomier in South Korea, a bellwether for global demand. An extended slide in exports has hit manufacturers in Asia's fourth-largest economy, with the August PMI contracting at its fastest pace in a year.
"Given Korea acts as a harbinger for the rest of Asia, we believe Asia's cycle is now headed for another down-move," said Vaninder Singh, Asia economist at RBS in a note to clients.
There were some encouraging signs in India. August factory activity expanded at its fastest pace since mid-2015, but investors will have to square that with data released on Wednesday that showed economic growth slipped to its lowest in more than a year in the three months from April to June.
(Reporting by Yawen Chen & Sue-Lin Wong in Beijing, Purnita Deb in Bengaluru, David Milliken in London, Minami Funakoshi in Tokyo, Cynthia Kim in Seoul, Karen Lema in Manila and J.R. Wu in Taipei; Editing by Larry King)