WASHINGTON, March 25 (Reuters) - Washington D.C.'s municipal government ordered all non-essential businesses in the U.S. capital to close for a month starting on Wednesday night due to the coronavirus outbreak.

"This Mayor's Order requires temporary closure of the on-site operation of all non-essential businesses and prohibits gatherings of 10 or more people," Mayor Muriel Bowser's office said in a statement.

(Reporting by Eric Beech; Editing by Sandra Maler)