Dr John Sentamu will use his time there to address the issue of climate change.
His visit will take place between 27 July and 14 August, and will include him leading a series of leadership reflections on climate change before giving a public lecture on the issue.
The Archbishop of York, Dr John Sentamu said: "Climate change affects everyone: agriculture, tourism, fisheries, water, health and wellbeing. The skills and capabilities of local populations, national governmental authorities and regional organisations must act to ameliorate the effects of climate change. I am delighted to join Archbishop Winston Halapua for this Diocesan visit."
Archbishop Winston Halapua said: "We are greatly looking forward to welcoming the Archbishop and Mrs Margaret Sentamu in Fiji, Samoa, and the Kingdom of Tonga. This will be the first time that the Archbishop of York has come to this corner of the Earth and our nations will be blessed by their enrichment and encouragement in our common mission. One of the global issues which is impacting our region requiring a clear voice from the Church is the issue of climate change and sea-level rising."
The countries in the Pacific islands are said to be particularly vulnerable to the effects of climate change and the visit comes just months before world leaders gather in Paris for a major summit on the issue.
Earlier this year this month, the General Synod of the Church of England overwhelmingly welcomed the new climate change policy adopted by the Church's investing bodies, a policy which has already been welcomed from both within and outside the Church.