Met Eireann has issued a Status Yellow alert for the South East on Christmas Day.
The Rainfall alert covers all counties in Leinster and Munster.
The forecaster warns that rain is likely to become persistent and heavy during Monday.
The warning is valid from 4am until 8pm on Christmas Day.
— Met Éireann (@MetEireann) December 23, 2017
Met Eireann also has a Status Yellow wind warning in place on Christmas Day for counties Donegal, Galway, Mayo and Sligo.