Taking effect from 3pm today, the affected counties will be Clare, Cork and Kerry
A day after issuing a Status Yellow Rainfall Warning for Counties Donegal, Galway and Mayo, Met Eireann has issued a second rainfall warning.
Issued at 10am this morning, the national weather forecaster warns of accumulations of between 20 to 40mm in Counties Clare, Cork and Kerry.
Effective from 3pm on Tuesday till 12pm on Wednesday, the warning reads: "Heavy rain this evening, tonight and tomorrow morning will give accumulations of 20 to 40mm, with potentially higher amounts in mountainous areas.
"As soils are saturated from recent rainfall this additional rainfall will lead to spot flooding."
The previous Status Yellow Rainfall Warning issued yesterday took effect from 1pm today and will remain in place until 1pm on Wednesday for Counties Donegal, Galway and Mayo.
Speaking of this rainfall warning, Met Eireann said: "Heavy rain with accumulations between 30 to 50mm expected, potentially higher amounts possible in mountainous areas.
"Localised flooding, poor visibility and poor driving conditions are expected."
Elsewhere in the country, the south midlands and south-east will remain largely dry until the evening.
A national outlook forecasts strong to southwesterly winds with top temperatures of 16 to 19 degrees in the northwest, reaching 19 to 24 degrees elsewhere.