The phrase "a particularly difficult month" is correct and usable in written English.
You can use it when describing a month that presented significant challenges or hardships.
Example: "Last December was a particularly difficult month for our team due to the unexpected project deadlines."
Alternatives: "an especially tough month" or "a notably challenging month".
It said it would see a loss in half year, compared with a £15 million ($30.5 million) profit in the corresponding period last year, thanks to a "particularly difficult August".
But the TalkTalk service went down at a particularly difficult time last month.
Biderman finds some women seek arrangements to help get them through a particularly difficult week or month, while others saddled with significantly more debt might search for a longer-term, more lucrative hookup.
Mr. Riordan has had a particularly difficult time of it since late January, when his sometimes biting candor began to shade into what looked like a bad temper, particularly when he was asked about his contradictory statements regarding abortion.
Pearce, a favorite to make the 2010 United States snowboarding team, was practicing a particularly difficult trick in Park City, Utah, on Dec. 31, 2009, when he fell and hit his head on the icy wall of the halfpipe.
"We understand that Christmas will be a particularly difficult time to be without April being amongst us, but as parents of Harley and Jasmine we will obviously acknowledge the festive period as best we can.
The video, released on a scorching July day, a particularly difficult one for fasting, brought to mind Rebecca Mead's verdict on Angelina Jolie's recent decision to make public her preventive double-mastectomy surgery: "It is what celebrity is for".
Joaquín Almunia, the E.U. competition commissioner, said the airlines had colluded over surcharges for fuel and security during a particularly difficult period for the industry after the terror attacks on the United States on Sept. 11, 2001.
