Met Éireann has issued a status yellow rain warning for the entire country today.
The warning came into effect at 3am and will stay in place until 3am tomorrow, Monday.
In Cork, Kerry and Waterford, a status orange rain warning is in place.
For Kerry, this will remain in place until 3pm today, while the warning has been extended in Cork and Waterford until 3am tomorrow.
Isolated thunderstorms and localised flooding are expected.
"Really, locals would want to take care on roads."
Alan O'Reilly from Carlow Weather told Newstalk listeners that they can look forward to more settled conditions later in the week.
"Up to 40 to 50 milimetres is possible in a 24 hour period for Cork, Kerry and Waterford, which could lead to some spot flooding in those areas."
He warned: "Really, locals would want to take care on roads."
"The rain will clear away on Monday and, while there will be some showers for the rest of the week, it does look like generally much more settled weather and very little rainfall for the rest of the week after Monday."
Main image shows the N7 Kildare as the the rain pours down. Picture by: Eamonn Farrell/RollingNews.ie