Cardiff Blues centre Roberts will not tour with his international teammates in June after undergoing knee ligament surgery but is hoping to be fit again come October.
Roberts has started every game for the Red Dragons this year and sees Howley, who was attack coach during the Championship, as an ideal appointment to lead Wales in hostile territory this summer.
"Rob commands respect off all the players," said Roberts.
"He's played at the highest level, he's very meticulous in his planning and he gets on very well with the guys.
"It's an opportunity for Rob and the guys with Wales to really make their mark and show they can take charge of a team.
"He's a very good coach, a very clever coach and has done wonders with the Welsh backs over the last couple of years.
"Certainly I've found my game has improved massively under Rob and I'm sure all the backs would agree."