The forecaster said heavy rain may lead to some flooding and travel disruption.
Status Yellow rain warnings have also been issued for counties including Carlow, Kildare, Kilkenny, Laois, Wexford, Tipperary, Cavan, Monaghan, Louth, Dublin and Wicklow.
In a nationwide weather advisory, Irish forecaster Met Éireann has warned that flooding is likely due to a combination of already saturated ground, high river levels and high tides.
The Road Safety Authority is urging drivers to take care on the roads.
Dublin City Council said it was monitoring river levels and coastal conditions, external closely to “ensure appropriate responses as required”.
It said its crews were active across the city, with removal of debris at rivers and blockage clearing ongoing to minimise negative impacts.
The council has a “limited supply of sandbags at strategic locations for use in response to identified flooding risks”.
Wicklow County Council said it was in a “state of readiness”, external ahead of the Status Orange warning.
It said it had taken a number of preventative measures, including replenishing stocks of sandbags, closing roads subject to flooding and structural damage, and crews working to clear drains and gullies that have become blocked with flood debris.
In Waterford, the council said high tide had passed on Thursday morning and flood defence barriers had been effective, external.
Waterford City and County Council ground crews are on site to monitor the situation.
Weather stations at Dublin Airport and Phoenix Park in Dublin both recorded their wettest January since 1948.
A study carried out between Maynooth University and Met Éireann found that the amount of rain over eight days, including during Storm Chandra, was three times more likely due to climate change.