Met Éireann is once again warning of localised and river flooding with difficult travelling conditions expected.
Another status yellow weather alert is in place for counties in the south and east of the country.
Flooding has been reported in many of these areas already this week, due to Storm Chandra.
This latest weather alert took effect at midnight – Carlow, Dublin, Kilkenny, Wexford, Wicklow and Waterford are under the rain alert until midnight tonight.
People walking through floodwater in Enniscorthy, Co Wexford. Photo: Niall Carson/PA Images
Met Éireann has warned that heavy rain, combined with saturated grounds and high river levels, could lead to more flooding.
Home owners and businesses across the east and south east are still counting the cost after being hit by significant flooding following Storm Chandra earlier in the week.
Several parts of Enniscorthy town centre were impassable on Tuesday with dozens of homes and businesses under several metres of water.
The River Slaney bursts its banks in Enniscorthy, Co Wexford. Photo: Niall Carson/PA Images
A Status Yellow rain warning has also been issued by the Met Office for Northern Ireland, from midnight until 6pm on Friday.
The latest alert comes as Minister for Housing, James Browne accused Met Éireann of holding back information on the severity of Storm Chandra.