A 25-year-old man has allegedly urinated on a war memorial in Sydney during the week of Remembrance Day.

The man allegedly urinated on the wall of the ANZAC War Memorial in Hyde Park at around 12:50 am on Sunday.

Police arrested him at a nearby apartment complex before he was charged with committing an offensive act on a war memorial.

The man was granted conditional bail to appear at Downing Centre Local Court on December 9th.

It's not the first time someone has urinated on a war memorial in Hyde Park, with a French tourist doing the same thing nearly a year ago.

Brance Blanchard, 22, was caught in the act after security guards jogged over just as he was zipping up his fly.

"I was walking along and urinated on the wall, I didn't know what the building was. I just got to Australia two days ago, I'm from France," he told police.

He pleaded guilty to committing an offensive act on a war memorial.