Gidday mate: Australia welcomes Prince Harry and Meghan, Duchess of Sussex

Prince Harry and his wife, Meghan, Duchess of Sussex, arrived in Sydney yesterday, a day before they officially start a 16-day tour of Australia, New Zealand and the South Pacific.

The trip is their only international tour since the Duke and Duchess were married in May, apart from a two-day visit to Ireland.

The pair landed on an overcast morning after a commercial flight from London with a brief stopover in Singapore.

They have 76 engagements scheduled over 16 days in Australia, Fiji, Tonga and New Zealand. In Australia, they will pet a koala in a Sydney zoo, visit the drought-stricken Outback town of Dubbo and meet indigenous leaders on Fraser Island, the world's largest sand island, in northeastern Queensland state.

The Duke and Duchess of Sussex arrive in Sydney. Photo / Daily Telegraph

Harry and Meghan were driven from the airport to Admiralty House, the official Sydney residence of Governor General Peter Cosgrove, who represents Australia's head of state, Queen Elizabeth II, Harry's grandmother.

The couple had no official functions on Monday following a 22-hour flight.

Hundreds of wellwishers gathered with umbrellas outside the airport and Admiralty House in the hope of catching a glimpse of the couple and cheered as they arrived.

The crowd cheered as the waving couple was driven through the gates of the harbour-side mansion.

The tour coincides with the Invictus Games in Sydney which start on Saturday.

The sporting event founded by Harry in 2014 gives sick and injured military personnel and veterans the opportunity to compete in sports such as wheelchair basketball.

The couple will attend the games' launch and closing ceremonies.

The royals arrive in New Zealand on October 28 for five days.

- AP