Homes and business owners are beginning to count the cost as the latest 120km/h winds batter the west and south coasts.
An Orange weather warning is in place in some parts, and Met Éireann says the stormy weather is due to continue for the rest of the day.
Buses passing through Dublin's Sandymount are being diverted until the high tide passes. Until 2pm, Routes 1 and 47 traveling in the direction of Sandymount and Belarmine will operate via Park Avenue from Sandymount Village to St John's Church.
In Galway, Salthill prom, Barna and Clifden have been the worst affected.
Brid Moran owns WaveCrest Caravan Park in Caherdaniel. She has been telling Radio Kerry about the damage done to her livelihood.
ESB Networks says about 3,000 people across the country are without power this afternoon.
It says most of the outages have been caused by lightning damage.
ESB Networks Communications Manager Bernadine Moloney outlines the worst affected areas.
CORK: A fallen tree has been cleared on the Timoleague/ Bandon Rd (R602) approx 1km from Oldchapel. http://t.co/nqdTLmlPQj— AA Roadwatch (@aaroadwatch) January 6, 2014
Gales today with gusts 90to120km/h & very high Atlantic waves causing some coastal flooding. Heavy showers with hail/Thunder/some flooding.— Met Éireann (@MetEireann) January 6, 2014
Much of the boardwalk in Youghal, Co Cork, has been washed away by powerful waves.
In Waterford city, there has been flooding on the Park Road and on the Old Tramore Road.
The boathouse at Ballybunion Sea and Cliff Rescue Centre in Co Kerry has been badly damaged by high tides and storm surges this morning.
Cork and Galway have been hit by flooding this morning, as the south and west bears the brunt with 120 kilometre winds and high tides.
Passage East Car Ferry in Waterford has stopped its services until approx 11am due to flooding in Passage East. http://t.co/nqdTLmlPQj— AA Roadwatch (@aaroadwatch) January 6, 2014
The River Lee has burst its banks in Cork city and there has been flooding in Bantry along the quay and in Wolfe Tone Square.
Morrison's Island, Union Quay and Wandesford Quay in Cork city are all impassable.
In Galway, the Promenade from Blackrock through Salthill is closed as high tide arrives and the Corrib River has broken its banks near the Spanish Arch.
While in Co Clare, Lahinch has suffered more flooding this morning, with the Liscannor Road now blocked by tidal water and debris.
The Promenade from Blackrock through Salthill up to And including Grattan Rd closed. Diversions in place. Overtopping waves at high tide.— Galway City Council (@GalwayCityCo) January 6, 2014
CLARE: Flooding on Lahinch /Lisdoonvarna Rd between Lahinch & Liscannor. Debris & rocks have also been washed up on this road.— AA Roadwatch (@aaroadwatch) January 6, 2014
CORK: In the city Wandsford Quay, Sharman Crawford St & Morrissons Island closed - flooding. Avoid Sth Terrace also. http://t.co/xIOpAb4ktr— AA Roadwatch (@aaroadwatch) January 6, 2014
High tide in Salthill pic.twitter.com/Hj9DnYrDOV— Paul O’Brien (@PGaillimh) January 6, 2014
Winds of up to 120 kilometres per hour have knocked out power to around 4,000 homes across the country - with Westport Co Mayo, Ennis Co Clare, Bunclody Co Wexford, Clara in Co Offaly and Cahersiveen in Co Kerry the worst affected.
Road flooded on Salthill promenade at Leisureland. Westbound traffic being diverted. pic.twitter.com/hlpx7kpXGe— Pat McGrath (@patmcgrath) January 6, 2014
CORK: The Bailick/ Ballynacorra Rd (R630) in Midleton is closed due to flooding. http://t.co/xIOpAb4ktr— AA Roadwatch (@aaroadwatch) January 6, 2014
DUBLIN: A fallen tree is partially blocking traffic on Clonard Rd at the Old County Rd jct. http://t.co/xIOpAb4ktr— AA Roadwatch (@aaroadwatch) January 6, 2014
CORK: The Quay and Wolfe Tone Square in Bantry are closed due to flooding. http://t.co/nqdTLmlPQj— AA Roadwatch (@aaroadwatch) January 6, 2014
No storm disruption to report, all trains running on all routes, excl existing bus transfers between Waterford & Kilkenny / Carrick-on-Suir— Iarnród Éireann #StaySafe (@IrishRail) January 6, 2014
The Prom from Grattan Road and along Seapoint Promenade closed because of heavy spray. More road closures may be necessary by 8.30am— Galway City Council (@GalwayCityCo) January 6, 2014
Co Clare suffered some of the worst damage in last Friday's storms.
Tom Tiernan, a Senior Engineer with Clare County Council, says the county is bracing itself again.
A number of ferries have also been cancelled.
Cool and very windy today with dry spells and occasional showers, some heavy and thundery with hail giving the risk of spot flooding.— Met Éireann (@MetEireann) January 6, 2014
CLARE: Flooding on the Lahinch /Lisdoonvarna Rd (R478) between Lahinch and Liscannor. Take extreme care.— AA Roadwatch (@aaroadwatch) January 6, 2014
Met Éireann has issued a warning for extremely windy conditions; with coastal flooding likely. http://t.co/nqdTLmlPQj— AA Roadwatch (@aaroadwatch) January 6, 2014
The Junior Finance Minister, Brian Hayes, said funds for repair will be made available for some eligible groups after the storm has passed.