Met Éireann has issued a weather advisory as heavy showers and longer spells of rain leading to flooding in parts of the country.
On Wednesday and Thursday, Storm Ciaran is expected to bring falls of heavy rain and strong winds.
But Galway might avoid the worst of it, as early indications suggest the heaviest rain and strongest winds will be in Munster and Leinster.
The weather conditions could lead to poor visibility and difficult or dangerous driving conditions, Met Éireann says.
