Italy convincingly beat Japan 42-21 on Saturday in both teams' final warm-up match before the Rugby World Cup in France.

Monty Ioane scored a hat-trick of tries book-ended by Stephen Varney and Martin Page-Relo scores in a deserved win at a sweltering Stadio Monigo in Treviso.

Tommaso Allan kicked 17 points as the Azzurri won their second straight test match after hammering Romania last weekend.

Japan scored three unconverted tries through Jone Naikabula, Clermont back Kotaro Matsushima and Dylan Riley, with Lee Seung-sin kicking two penalties.

Kieran Crowley's Italy have also lost to Ireland and Scotland in their preparations for a hugely difficult Pool A at the World Cup.

Italy have been drawn with hosts France and New Zealand in a five-team pool which also features Namibia and Uruguay.

With two teams going through to the quarterfinals Italy will have to beat either France or the All Blacks if they are to reach the knockout stages for the first time.