A status yellow rainfall warning comes into effect in Cork soon.
It starts at 10am and lasts until lunchtime tomorrow.
Kerry, Waterford, Carlow, Kilkenny, Wexford and Wicklow are also set to be affected.
Speaking to RedFM News, Met Éireann's Linda Hughes says localised flooding, poor visibility and difficult travelling conditions are all possible:
"There could be some heavy bursts of rain that can cause some poor visibility and some difficult traveling conditions as well with some surface water possible on the road. So do take care if you're if you're traveling today and tomorrow morning as well. So could be some spot flooding right throughout this period with accumulations of around 30 to 40 millimeters expected in Cork between now and tomorrow afternoon."
