(Updates prices, adds comments)
* Portfolio adjustments at month's end boost euro
* Euro hits more than 2-1/2-year peak vs dollar
* Scaramucci departure clouds U.S. political outlook
* Dollar touches more than six-week low vs yen
NEW YORK, July 31 (Reuters) - The U.S. dollar hit a more than 2-1/2-year low against the euro on Monday on month-end portfolio adjustments and uncertainty over the U.S. political outlook after the departure of White House communications director Anthony Scaramucci.
The euro hit more than 2-1/2-year peaks against the dollar earlier in the session on month-end buying and euro zone inflation data that kept expectations for a more hawkish European Central Bank alive. It extended gains to trade as much as 0.8 percent higher against the dollar on the day after the New York Times reported U.S. President Donald Trump had decided to remove Scaramucci.
The White House later said Scaramucci was leaving the job after little over a week. Scaramucci's departure follows one of the rockiest weeks of Trump's presidency in which a major legislative effort - a healthcare overhaul - failed in Congress and both his spokesman and previous chief of staff left their jobs.
The dollar index, which measures the greenback against a basket of six major currencies, hit its lowest since early May 2016 of 92.786 after the news of Scaramucci's departure. The dollar also hit a more than six-week low against the yen of 110.22 yen.
Doubts surrounding the likelihood of Trump realizing his pro-growth agenda, including tax reform, have hurt the dollar and contributed to the dollar index's roughly 2.9 percent decline in July. That decline would be the biggest monthly drop since March 2016.
Concerns that low U.S. inflation could lead to a more dovish Federal Reserve have also hurt the greenback.
With the confirmation of Scaramuccis departure, this is another blow to the administrations credibility," said Alfonso Esparza, senior currency analyst at Oanda in Toronto.
The euro was boosted earlier in the day as traders bought the currency as part of month-end portfolio adjustments, analysts said, and on the expectations the ECB was on track to tighten monetary policy.
"Europes economy is really doing well, and as a result you should expect monetary policy over the medium term to adjust to that," said Greg Anderson, global head of foreign exchange strategy at BMO Capital Markets in New York.
The euro was last on track to gain 3.6 percent against the dollar in July to mark its biggest one-month percentage gain since March 2016. The dollar was set to fall 1.9 percent against the yen to mark its biggest one-month percentage decline in six months. (Reporting by Sam Forgione; Editing by Grant McCool and Chris Reese)