The St Patrick's Day parade in Galway will start at 12.30 p.m. on Sunday, at University Hospital, finishing in Eyre Square.
In Navan, the parade will start at 2 p.m. from the old Kilcarne bridge on the Dublin to Navan road. It will float along the river Boyne, before transferring to land and travelling through the town at 4 p.m.
The Limerick parade begins on Roden Street at 11.30 a.m.
In Sligo, the parade begins at noon on Mail Coach Road, finishing on Pearse Road. In Cork, the parade begins at 12.30 p.m. at Patrick Street, finishing at the Imperial Hotel, South Mall.
In Belfast, four parades from the north, south, east and west of the city will start between noon and 12.30 p.m. and will converge before arriving at Belfast City Hall. In Derry, singer Brian Kennedy will play a free concert at Guildhall Square on Sunday evening from 5.30 p.m. to 7.30 p.m.
There will be no parade in Monaghan town or in Bray.