MET EIREANN has a Code Orange in place today as gale force winds of 90 to 120km/h are sweeping the country with heavy rain.
It will also be cold tonight with scattered showers and some clear spells.
Southerly gales or strong gales continuing for time this evening on the Irish Sea.
In addition, southerly gales will develop later tonight on coasts from Loop Head to Erris Head to Rossan Point, extending to all coasts on Sunday morning.
It also warned of increasingly strong gales to storm force 10 between Slyne Head in Galway and Donegal's Malin Head.
Lowest temperatures of 2 degrees to 6 degrees are expected with a slight frost in places with temperatures rising again by morning as windy and cloudy weather develops.
The Automobile Association said that roads were very wet with blustery conditions in many counties and spot flooding reported in Mayo, Sligo, Roscommon, Tipperary and Kerry.
Motorists were urged to take extra caution and to watch out for debris on roads.
AA Ireland said caution should be taken with the risk of cross-winds.
Dublin and Cork airports were also reporting some delays due to the conditions with intending passengers, or those meeting people at the airport requested to check arrival and departure times in advance.
Irish Rail said this afternoon that bus transfers were in operation from Killarney to Farranfore and Tralee due to flooding on the line.
There was also a short disruption on the Sligo line caused by a fallen tree.
Meanwhile, a severe weather warning has also been issued by the Met Office for Scotland, Northern Ireland, North West England and the northern tip of Wales.
Transport links are expected to be disrupted with warnings that lorries could be overturned by strong winds, roads are likely to be blocked by fallen debris and ferry services could be cancelled as the gales whip up dangerous sea conditions.
Coastal areas could also face flooding, the Met Office said, especially where storm-driven waves combine with high tide.
Winds are expected to ease off late on Saturday but the weather warning will remain in place for much of northern Britain into Sunday.