A Status Yellow rainfall warning has been issued for four counties going into the weekend.
As part of the rainfall warning, Met Eireann has forecast heavy downpours in Donegal, Galway, Mayo and Sligo on Friday, with the risk of localised flooding.
The rainfall warning comes into effect at 3pm on Friday afternoon and is valid for a full 24 hours.
The warning reads: "Heavy rain with accumulations of 40-50mm over the period with localised flooding. At the coast, high seas and strong to gale force southerly winds will combine to give a risk of coastal flooding."
Status Yellow - Rainfall warning for Donegal, Galway, Mayo and Sligo pic.twitter.com/nPjIJjlIKk
— Met Éireann (@MetEireann) January 9, 2020
While the rainfall warning only applies to four counties in the northwest of Ireland, the rest of the country should expect plenty of rain on Saturday afternoon.
"Parts of the east will start off dry on Saturday but heavy and persistent rain will spread countrywide through the morning, eventually clearing to showers later in the afternoon," a Met Eireann spokesperson added.
"Fresh south to southwest winds will veer westerly with the clearance of the showers. Highs of 11 to 13 degrees.
"A mix of scattered showers and clear spells on Saturday night. Lows of 2 to 5 degrees with some frost patches and light to moderate southwest winds."