* Foreign demand boosts Czech, Hungarian trade surpluses
* Czech output up 9.7 pct y/y, retail sales leap
* Analysts cautious, say global demand still key to recovery
By Michael Winfrey
PRAGUE, Aug 6 (Reuters) - German demand helped Hungary and the Czech Republic extend a manufacturing surge in June but volatile domestic demand means the European Union's two most export-oriented emerging economies are still at the mercy of an uncertain global recovery.
Czech and Hungarian exporters are riding on a wave of global orders for euro zone goods in which they play a crucial role in the supply chain but economists said a potential double dip in the United States and a slowdown in China could temper that boom.
Recovering from double-digit falls in output in 2009 when the global economic crisis thrust most of emerging Europe deep into recession, the two neighbours are posting solid trade surpluses based on booming exports.
Hungary posted a surplus of 566.9 million euros in June <HUTRD=ECI>, data showed on Friday, above expectations and up from a 423.6 million surplus in May. Other data on Thursday showed output surged 15.2 percent from a year ago.
In the Czech Republic, where 32 percent of exports go to Germany, manufacturing output jumped 9.7 percent from a year earlier, contributing to a 10.4 billion crown ($552.3 million) trade surplus in June. That was down from a 12.07 billion surplus in May and below market forecasts due to a 28 percent rise in imports, much of which are components for the manufacturing sector.
Analysts said the data was positive, and driven by German demand, although questions remained whether a recovery would take hold in domestic demand. Domestic consumption has lagged far behind export-based industries in both countries and is expected to pick up only very slowly.
CAR SALES SURGE
Data on Friday showed Czech retail sales leapt 6.6 percent on the year, the third rise in four months and well above analysts' forecasts for 1.4 percent growth. However, growth was mainly due to an 18.7 percent surge in car sales which analysts said may have been spurred by car dealers offering discounts.
Analysts said weak wage growth and persistently high unemployment would continue to keep the economic recovery mostly limited to the export-based sector.
"We remain cautious as regards the performance of household consumption," said Radomir Jac of Czech-based PPF Asset Management. "Although the worst is over as regards unemployment, wage growth remains muted and we expect de facto stagnation or only a marginal increase in household consumption for 2010."
The Czech government expects economic growth of 1.6 percent in 2010, overturning a 4.0 percent contraction last year. Hungary expects growth of just 0.5 percent, versus a 6.3 percent decline in 2009.
Gyorgy Barta, of Central European International Bank, said a string of factors could now cause the pace of exports to weaken.
"The Western European recovery could be hindered by the running out of one-off factors (inventory rebuilding, fiscal stimuli), therefore a relapse in the uptrend is imaginable," he wrote in a note. "Fiscal austerity programs abroad also pose a downside risk to our export growth."
Much will depend on whether German demand in particular continues to improve. Last month, German car maker Volkswagen's <VOWG.DE> Czech unit Skoda Auto reported car sales rose 15 percent year-on-year in the first half to a record high, boosted mainly by sales to Germany and China.
Skoda, the Czech Republic's biggest exporter, accounts for about 5 percent of the country's total sales abroad.
In Hungary, where exports rose 23.2 percent in June, outpacing a 19.8 percent rise in imports, nearly 80 pct of shipments went to the euro zone, with Germany the biggest market. (Reporting by Michael Winfrey; Editing by Susan Fenton)