Some 20,000 people are set to ascend Croagh Patrick in Mayo today as part of the annual Reek Sunday pilgrimage.
The papal nuncio to Ireland is to take part in the annual pilgrimage to Croagh Patrick for the first time.
Most Rev Charles Brown (52) will undertake the climb today, accompanied by the Archbishop of Tuam, Dr Michael Neary, who usually takes part in the annual climb and celebrates Mass in the chapel on the summit.
The decision to participate in the pilgrimage by the nuncio, who was appointed in January, is in keeping with his stated ambition to “get to know more about Ireland”.
He was born in Manhattan in 1960, and much of his ministry has been spent in the United States. He has worked at the Vatican’s Congregation for the Doctrine of the Faith since 1994.
Met Éireann has forecast heavy rain showers at times in the afternoon, while top temperatures will be 17 degrees.
Climbers are urged to come prepared for the weather conditions, bring suitable warm and waterproof clothing, good footwear a walking stick and water.
The pilgrimage is traditionally held on the last Sunday in July.
It is associated with St Patrick who, in 441, is believed to have spent 40 days and nights fasting on the summit.
The pilgrimage has been carried out uninterrupted for over 1,500 years.