Galway is among ten areas which will come under a Status Yellow rain warning from 6 tomorrow evening.
The moderate warning covers Connacht, Clare, Cork, Kerry, Limerick and Donegal from 6pm tomorrow to midnight on Sunday.
Met Eireann is warning of spells of heavy rain with an increased flood risk idue to high river levels and saturated ground.
The likely impacts over the 32 hour period are river and surface flooding, difficult travelling conditions and poor visibility.