* Hungarian, Polish central banks warn of inflation risks
* CSFB raises inflation forecasts for region, ratings agency Moody's sees need for tightening
By David Chance
BUDAPEST, June 5 (Reuters) - East European central bankers warned on Thursday that inflation would continue to rise and said they needed to hike interest rates further.
The warnings came as the European Central Bank said it may raise interest rates in July after it leaving them on hold at 4 percent on Thursday for the 12th month in a row.
In Hungary, where interest rates already stand at a 3-year high of 8.50 percent after 3 consecutive hikes totalling 100 basis points, central bank Governor Andras Simor said an expected slowing in inflation had not happened.
The delay "raises inflationary expectations, which in turn increases the risks to the (3 percent) 2010 inflation target," he told a business conference.
Headline inflation in Hungary was 6.6 percent on an annualised basis in April <HUCPIY=ECI> and is expected to come in at 6.55 percent when data for May is released next week, according to a Reuters poll <HUCPIY1>.
"In our view it will take a more aggressive monetary policy (in Hungary) i.e. further rate hikes and a temporary boost to the exchange rate to moderate uncertainty about inflation and the related risk premium, similarly to Czech and Polish Central Bank actions," said Commerzbank analyst Barbara Nestor.
In Poland, headline inflation in April was 4.0 percent <PLCPIY=ECI> and could spike to 4.5 percent in August, according to central bank rate setter Katarzyna Zajdel-Kurowska.
Polish Monetary Policy Committee member Dariusz Filar said there may need to be a "few more moves" in policy to bring inflation back to the central bank's target of 2.5 percent.
His comment echoed a report by the Organisation for Economic Cooperation and Development on Wednesday recommending "substanial rate hikes" by Poland's central bank.
The bank has raised rates seven times since April 2007 to 5.75 percent <PLINTR=ECI> to curb inflation and analysts polled by Reuters expect a further 25 basis point hike in June.
PRICES ACCELERATE
Price growth has accelerated across eastern Europe as oil and food prices add to already buoyant consumer demand, prompting hikes in Poland, Hungary, Romania and elsewhere.
In Romania, growth of an annualised 8.2 percent in the first quarter of the year prompted central bank governor Mugur Isarescu on Wednesday to warn of "overheating".
The bank there has raised rates five times to 9.75 percent and inflation was stuck at a two-year high of 8.6 percent in April, well above the bank's end-year goal of 2.8-4.8 percent.
While central banks have responded with higher rates, concerns are being voiced over the strength of currencies.
Hungary's forint has risen by 4.5 percent against the euro <EURHUF=D2> this year and hit 5-year highs earlier this month. Goldman Sachs is forecasting that the currency will rally to 225 to the euro over the next 12 months from 242.75 at present.
The strong forint, which could hit exports, the only growing sector of Hungary's ailing economy, has prompted criticism from top officials in the ruling Socialist Party.
Earlier this week Poland's central bank governor Slawomir Skrzypek said he was concerned whether the economy could adjust to the rise in the value of the zloty, which has gained 6.6 percent this year <EURPLN=D2> against the euro.
The Czech crown <EURCZK=D3> hit 24.533 per euro on Thursday, an all-time high excepting a freak trade in April. It has appreciated 6.5 percent since the start of the year.
INFLATION FORECASTS RAISED, GROWTH SQUEEZED
Most central banks and economists did not anticipate energy and food prices would rise so strongly. In a report published on Thursday, investment bank Credit Suisse upped its inflation forecasts across eastern Europe, the Middle East and Africa.
"We expect regional inflation to pick up from 9.4 percent year-on-year in 2007 to 10.5 percent year-on-year in 2008," the bank said in its quarterly economic outlook.
An analyst from rating agency Moody's also sounded a warning note in an interview with Reuters, but noted that with economic growth under pressure, policymakers needed to exercise caution.
Economic growth in Hungary was just 1.3 percent in 2007, the slowest in the European Union, while in Poland, growth is seen slowing to 5.5 percent this year from 6.6 percent in 2007.
"What you see under current macro conditions (emerging European countries) have a difficult time suppressing the second round effects of imported inflation," Moody's regional analyst Kristin Lindow said.
"The whole package is not quite tight enough in the region, but ... you have to push very gently on the brake and so it's quite a delicate process." (Reporting by Balazs Koranyi, Kuba Jaworowski, Karolina Slowikowska)