The warning states that the heavy rain could result in flooding in certain areas.
Met Éireann have issued two separate weather warnings, both of which come into effect in the next 24 hours.
The first is a status yellow wind warning, and it covers Clare, Cork and Kerry.
Met Éireann issued the following warning description: "Very windy conditions are expected to develop in parts of Munster overnight and during Thursday morning.
"Southerly winds veering west to northwest will reach mean speeds of 55 to 65km/h at times, with gusts of 90 to 110km/h, highest in coastal areas and on exposed hills and mountains where winds may temporarily exceed these thresholds. Given the time of year with many trees in full leaf, there is a greater potential for wind related impacts."
The warning is valid from 11pm tonight to 12pm on Thursday.
The second warning is a status yellow rain warning, and it covers Dublin, Louth, Wicklow and Meath.
Met Éireann state that "Heavy downpours on Wednesday night and into Thursday morning may result in some river and spot flooding."
This warning is valid from 1am on Thursday morning until 2pm on Thursday afternoon.