The visitors overcame a rocky start in their chase of 171, underlining their depth and composure to close out a dominant white-ball campaign.

Reduced to 25 for 3 in the powerplay and 60 for 4 shortly after, Australia appeared vulnerable for the first time in the series. But a measured 32 from Cameron Green, explosive hitting from Tim David (30 off 12), and a crucial lower-order effort from Aaron Hardie (28 not out off 18) guided them home with 18 balls to spare.

"We didn't expect to go 5-0 at the start, but the way we adapted and executed throughout the series was outstanding," said Australia captain Mitchell Marsh, reflecting on a tour in which his side won all eight international matches, including a 3-0 sweep in the Tests.

Earlier, the West Indies struggled to build momentum after being sent in to bat. Ben Dwarshuis struck twice in the powerplay, removing Brandon King and Shai Hope, and returned later to dismiss the in-form Shimron Hetmyer, who top-scored with 52 off 31 deliveries.

Hetmyer's knock, featuring three sixes and three fours, had briefly lifted West Indies hopes after a stuttering start, but his dismissal in the 17th over triggered a late stumble. The hosts finished on 170 for 7 - competitive, but below par on a true surface.

Dwarshuis, named Player of the Match for his 3 for 35, said conditions demanded discipline. "It was a little slower than usual, so we focused on variations - hitting the wicket hard, using the slower ball. It paid off today."

Despite glimpses of promise, the West Indies were unable to deliver a complete performance in any of the five games. Captain Shai Hope conceded as much in the post-match interview.

"We didn't put together a full batting effort in any match. It was either a strong start and poor finish, or the other way around. Against a team like Australia, that's not going to be enough," he said.

Australia's victory extends their winning streak across formats on this tour and highlights their growing bench strength ahead of upcoming global assignments. For the West Indies, the series marks another disappointing chapter in their ongoing rebuild, particularly in the T20 format.

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