The torrential rains which caused floods across the State in the last few days are set to return on Sunday, according to Met Éireann.
Areas that were worst hit by the recent downpours will be at risk of further flash-flooding on Sunday, with more heavy rains falling on already saturated ground.
Cork and Kerry will see the first of the rain on Sunday morning before it spreads across the rest of the State, Met Éireann predicts.
The wet weather, which is expected to continue into next week, is the result of warm air coming up from the coast of Florida, which was devastated by Hurricane Charley last week, and the Caribbean where Hurricane Alex hit two weeks ago.
However, a spokeswoman for Met Éireann said, Ireland is unlikely to experience storms of such intensity.
"There is nothing to indicate a hurricane moving in. We wouldn't expect the wanton destruction they had in Florida, but the warm air that was down over Florida has been moving up towards us," Ms Sarah O'Reilly said
Tomorrow and Saturday will see "the best of what's in store" over the weekend, with few showers, fresh breezes and temperatures of 17 to 18 degrees.
However, it will not be sufficient to dry out waterlogged ground.
Close to an inch of rain could fall on Sunday, and wet, blustery conditions are predicted to continue through much of the week.
Intense localised bursts of torrential rainfall in the west Cork-south Kerry area on Wednesday afternoon have completely taken away a scenic section of road between Kilgarvan and Bantry and led to large landslides and rockfall over a mile-long stretch.
The road will remain impassable and closed for at least a week, and early estimates suggest that at a minimum some €100,000 of damage has been done.
At least one local man had a narrow escape and was forced back into Kilgarvan village as he attempted to go to his home in the Borlin Valley yesterday.
Attempts were hastily made to erect road-closed signs to prevent cars being caught up in the collapse.
Mr Paul Neary, senior executive engineer with Kerry County Council in south Kerry, said there had been a serious downpour between 4 p.m. and 5.30 p.m. in the Bantry, Glengarriff and rural Kilgarvan areas.
Over an inch of rain fell in that period alone, according to estimates, and mountain streams and rivers became swollen.
The whole mountainous area along the road was a catchment for a number of streams. These had funneled the bursts of rainfall and led to the road collapse some six miles from Kilgarvan, just beyond the tunnel overlooking the Slaheny river, Mr Neary explained.
The drainage system simply could not cope with the amount and intensity of the localised rainfall, he added.
At the point where the water was most funnelled a large culvert collapsed, and a deep crater now remains over a 20-metre section of what used to be a roadway.
Cork University Hospital's accident and emergency department reopened yesterday afternoon following a major clean-up operation after torrential rain had led to flooding of the building on Wednesday evening.
Floods affected more parts of the North yesterday as Derry city centre began its clean-up operation. Heavy overnight rain left parts of Antrim and Armagh counties under water, with further problems reported in north and central Co Down, the Department of Regional Development said. Parts of Belfast were also affected.
Parts of north Belfast including Ballysillan had localised flooding, while three areas of Newtownards, Co Down, were affected by rising flood waters.