Portugal's monthly unemployment rate stood at 6.4% in June, unchanged from May, the National Statistics Institute (INE) said in its flash estimate on Monday.

The labour underutilisation rate also remained unchanged at 11.7%.

The youth unemployment rate - 16-24 years old - decreased to 17.2% in June, from 18.7% in the previous month and from 19.1% a year ago, the INE said. (Reporting by Joao Manuel Mauricio in Gdansk)