The status yellow warning applies to more than a dozen counties, with rain also forecast for the rest of the country
A rainfall warning has been issued for several counties across the country for Saturday.
The status yellow warning applies to Dublin, Carlow, Kilkenny, Louth, Wexford, Wicklow, Meath, Galway, Mayo, Clare, Cork, Kerry, Tipperary and Waterford.
It will be in effect from 3pm tomorrow until 6am on Sunday.
Met Éireann warns: "Heavy rain developing in the West Saturday afternoon will spread Eastwards during the evening and continue for a time overnight."
While the weather warning does not extend to Laois - where the Electric Picnic festival is taking place this weekend - Met Éireann is forecasting that rain will "slowly extend countrywide during the afternoon and evening" tomorrow, and turn "heavy and persistent".
The forecast for Sunday, meanwhile, is predicting a "cloudy, humid day with patches of rain, drizzle and fog".