(Updates prices)
* Euro returns to $1.3550 support level
* Eonia rates rise above ECB refinancing rate on Friday
* Australian dollar helped by China data
By Laurence Fletcher
LONDON, Jan 20 (Reuters) - The euro recovered slightly from a two-month low against the dollar on Monday, helped by higher short-term market interest rates, although speculation the European Central Bank may step in capped gains.
After breaking through support at $1.3550 on Friday, the euro fell in Asian trading on Monday to its lowest since Nov. 25 at $1.35080. It later recovered some ground, and was 0.1 percent higher at $1.3560
A U.S. market holiday kept a lid on volumes.
The single currency has weakened this month as year-end factors such as euro zone banks repatriating assets fade. Speculation the ECB will loosen monetary policy further means even a rise in overnight borrowing rates has failed to lift it.
"We think that (the) key driver of the recent euro underperformance is growing market expectations of ECB action to address the tightening money market conditions," Citi strategist Valentin Marinov said.
Eonia
After the ECB's January policy meeting, bank President Mario Draghi said an "unwarranted" rise in interbank lending rates that underpin euro zone borrowing costs would be one of two possible triggers for another rate cut or other action.
One trader said the euro's rise may squeeze out some short-sellers but that the single currency could then head lower again. Positive sentiment towards the euro has moderated, with investors betting it will fall adding to their positions for four consecutive weeks, according to a report from Scotiabank.
"The market has been focusing on broad dollar strength against everything except the euro ... The euro was playing catch-up," said Chris Turner, head of FX strategy at ING, referring to the euro's overnight weakness.
Turner said he expected the euro to fall to $1.33 this week and to $1.20 by the end of the year against a strengthening dollar as the Federal Reserve cuts back its bond-buying programme and as euro zone residents begin to invest abroad.
CHINESE GROWTH
Investors were left looking for direction, with little economic data from Europe, other than German December producer prices
The dollar index
The Australian dollar got some relief after China's economy grew in the final quarter of 2013 at an annual 7.7 percent, down from 7.8 percent in the previous three months but slightly above market expectations.
The Aussie gained 0.4 percent to $0.8810
Forex.com research director Kathleen Brooks pointed to rising inter-bank lending rates in China, a major export market for Australia.
"If we see another spike in rates as we lead up to Chinese New Year on Jan. 31...we may see (Chinese) stocks take another dip lower, which could weigh on the Aussie," she said.
(Efiting by Alison Williams and Nigel Stephenson)
((laurence.fletcher@thomsonreuters.com, twitter: @reutersfletcher, +44 20 7542 7729, Reuters Messaging: laurence.fletcher.thomsonreuters.com@reuters.net))
Keywords: MARKETS FOREX