Heavy overnight rain, which caused flooding in some parts of the east and south of the country, has eased in most areas.
While conditions have improved, motorists are still advised to drive with caution.
Gardaí say particular care should be taken in the greater Dublin area and warned drivers of flooding on the M1 at Dublin Airport, Swords and Donabate.
In Co Wexford, gardaí have advised that conditions are still treacherous on many roads.
In Wexford town a number of roads are impassable. AA Roadwatch is reporting severe flooding on the Wexford/Rosslare road.
Driving conditions in Co Wicklow are also said to have improved - but the Twenty Bends on the Scalp-Enniskerry road remains impassable due to flooding.
In Waterford, Dunmore East is badly affected and the N25, at the Waterford/New Ross road is impassable.
Enniscorthy remains on flood alert with high water levels on the River Slaney
In Cork conditions have improved, with some patches of spot flooding, around Glanmire village near John Barleycorn Hotel, Sarsfield Court and Riverstown.
With rain clearing this morning, conditions will improve nationally.