By Michael Winfrey
PRAGUE, Sept 1 (Reuters) - Czech and Polish manufacturing business shrank in August at the sharpest pace in more than five years due to a steep drop in western demand and strong currencies, which analysts said could prompt more dovish monetary policy. The Czech Purchasing Managers' Index (PMI) dropped to 47.3 in August, the lowest level since the series began in July 2001, falling further below the 50 divide between growth and contraction from 49.9 in July, data from Markit Economics and ABN Amro showed on Monday.
In Poland, the largest of the ex-communist economies to join the European Union since 2004, the contraction was sharper, to an index level of 45.8 in August from 46.4 in July, its sixth consecutive monthly decline and the worst figure since December 2002.
The drop came alongside PMI data from the euro zone -- emerging Europe's main export market -- that was a touch better than expected but still showed a significant contraction at 47.6.
"There have been signs of easing growth momentum across most economies in eastern Europe, including Poland, notwithstanding its healthy domestic demand momentum," said Roderick Ngotho, a foreign exchange strategist at UBS.
Last week the governor of Poland's central bank said policymakers "clearly" remained in a monetary tightening cycle after leaving rates on hold at 6.0 percent.
That followed Polish data showing a slower-than-expected deceleration in second quarter gross domestic product growth to 5.8 percent, partially a result of surging domestic demand.
The Czech economy, which has seen a sharp slowdown in consumer spending and is more dependent on export demand from Germany, slowed to grow 4.5 percent in the second quarter, from 5.1 percent in the first three months of the year.
That slowdown, exacerbated by record highs on the crown <EURCZK=> that have made Czech exports less attractive to west Europeans, helped prompt the Czech central bank to surprise markets with an interest rate cut to 3.5 percent last month.
Analysts said the PMI figures indicated the Poles could now likely keep interest rates on hold until the end of the year, while the Czechs could potentially cut again.
That feeling could be reinforced by weaker inflationary pressure on firms' costs. They hit a 15-month low for Czech manufacturers and an eight-month low of 56.0 in Poland.
"This just reinforces our view that there are downside risks even to the (Czech central bank's) new growth projections and further monetary loosening is likely in the near term," said Raffaella Tenconi, an economist at Dresdner Kleinwort.
Debbie Orgill, from ABN Amro, said: "For Poland the interest rate tightening cycle is coming close to an end, but rate cuts really are only a story for spring 2009 onwards."
The Czechs were also hit by the first decline in new orders in almost six years to a record index low of 45.0. For the Poles, the new export orders gauge rose to 44.0, from 42.6 in July, still representing a sharp contraction, and the output index fell to a 68-month low of 43.9.
(Editing by Ruth Pitchford)