* Investors expect easing steps at Thursday's ECB meeting
* Currency speculators increase short bets on euro - IMM
* Weak manufacturing data in U.S. and Germany
By Daniel Bases
NEW YORK, June 2 (Reuters) - The U.S. dollar rose on Monday, aided by subdued German inflation figures and slower-than-expected manufacturing growth in the euro zone, both of which piled pressure on the European Central Bank to aggressively ease monetary policy this week.
The U.S. dollar index rose 0.25 percent on Monday against a basket of currencies that make up its main trading partners . The index is hovering at a fresh two-month high.
Attention remains squarely on the ECB's policy meeting on Thursday and the U.S. payrolls report for May on Friday.
"The euro has been trading on the softer side in general as we go into the ECB meeting as there is some level of caution here," said Alan Ruskin, global head of G19 currency strategy with Deutsche Bank in New York.
"Plenty of speculation that they don't deliver enough monetary easing or that they deliver but it is already priced in we fall into a 'buy the rumor sell the fact' scenario," he said.
Currency speculators increased short positioning on the euro to 16,633 contracts from 9,220 last week, according to data for the week ended May 27 released by the Commodity Futures Trading Commission on Friday.
The ECB is preparing a package of policy options for its June 5 meeting that includes cuts in all its interest rates, Reuters reported last month.
The euro traded at $1.3606, down 0.18 percent in New York trade and not far from a three-month low of $1.3586 touched on Thursday.
Germany's annual inflation rate rose 0.6 percent, far less than the 1.0 percent expected in a Reuters poll and the lowest reading since February 2010. Euro zone inflation data is due out on Tuesday.
"Soft inflation now reinforces the point of view that the ECB will remain dovish and remain ready to ease policy in the future. That's negative for the euro," said Vassili Serebriakov, currency strategist at BNP Paribas in New York.
The euro also fell against sterling to 81.22 pence, with diverging monetary policy outlooks between the ECB and the Bank of England underpinning the pound.
In the United States, May ISM manufacturing data disappointed, pulling U.S. Treasury yields briefly from their highs and the dollar followed suit, with its gains against the euro and yen eroded.
Earlier, the final reading of the manufacturing Purchasing Managers' Index for the euro zone disappointed, slipping to a six-month low.
The dollar held its advantage on the yen, trading at 102.16 yen, a rise of 0.36 percent on the day. The euro rose 0.22 percent to 139.03 yen.