The King and Queen will visit Australia and Samoa but will miss New Zealand in October, Buckingham Palace says.
Doctors advised against extending the trip due to cancer treatment.
The royal duo will begin with a tour of the Australian Capital Territory and New South Wales.
Next will celebrate the “strong bilateral relationship” with Samoa and participate in the Commonwealth heads of government meeting.
Buckingham Palace said: “In close consultation with the Australian and New Zealand Prime Ministers, and taking due account of time and logistical pressures, it was therefore agreed to limit the visit to Samoa and Australia only.
“Their Majesties send their warmest thanks and good wishes to all parties for their continued support and understanding.”
More details about the visit to both countries will be announced soon.
Charles, 75, returned to public duty earlier this year while still receiving treatment for an undisclosed form of cancer.
Earlier this year, the king revealed the “shock” he felt with the diagnosis.
The monarch swapped stories and held hands with patients as he visited a cancer treatment center with the 76-year-old Queen.
When asked about your health battle and recovery, Her Majesty said it was a “shock” to receive her cancer diagnosis.
“It’s not that bad. It’s always a bit shocking, isn’t it, when they tell you?” He said.
When asked about his own cancer treatment, he said, “I’m fine, thank you.”
The King also sympathized with a cancer patient as she received chemotherapy with many others in a day unit, telling Lesley Woodbridge, 63: “I have to have my treatment this afternoon too.”
Timeline of the battle for King Charles’ health
A look at King Charles’ cancer diagnosis and recovery.
January 17th: Buckingham Palace announces that the king has been diagnosed with an enlarged prostate
January 26th: The Sun exclusively photographs the King arriving at the London Clinic for his ‘corrective procedure’
January 29th: Seen waving and smiling as he leaves the hospital after another night
February 5th: Palace revealed while in hospital for a prostate operation, doctors discovered that the king has a type of cancer
February, 10th: King issues ‘heartfelt thanks’ in written statement
February 21st: King tells Rishi Sunak he was ‘reduced to tears’ by get well cards
March 21st: The Princess of Wales and the King have lunch at Windsor Castle
March 22: Kate announces via video statement that she is being treated for cancer
March 31: King attends Easter Sunday service and takes part in a ‘walk’ with members of the public and aides say ‘it was a significant step’ as King ‘responded to the treatment in a very encouraging way’
April 4: The Sun exclusively reveals King has ordered aides to ‘overload’ his summer schedule and is ‘raring to go’
April 10: King and Queen vacation at Birkhall in the Scottish Highlands
April 26: Buckingham Palace announces King will return to frontline public duties
April 30th: King marks his public return by visiting a cancer hospital with the Queen
Future:
May 8th and 21st: Buckingham Palace Garden Parties
May 21st to 25th: Chelsea Flower Show
June 6: D-Day 80th anniversary celebrations in France and the United Kingdom
15th of June: Trooping the Color anniversary parade in London
June 17th: Garter Day Parade at Windsor Castle
June 18th to 22nd: Royal Ascot
June’s end: State Visit of the Emperor and Empress of Japan
July 3: Holyrood Week in Scotland
October: Two or three week tour of Australia
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