Met Eireann has warned there may be power outages as Storm Hannah moves in over Ireland.
A Status Orange wind warning has been issued for Clare, Cork, Kerry and Limerick from 4pm today until 5am tomorrow.
Winds are expected to reach mean speeds of 65kph to 80kph with gusts of 110kph to 130kph.
The national forecaster has told the public to "be prepared for possible disruption and power outages".
A separate Status Yellow wind warning is in place from 11pm today until 9am tomorrow for Connacht, Carlow, Kildare, Kilkenny, Laois, Longford, Wexford, Wicklow, Offaly, Donegal, Tipperary and Waterford.
The Road Safety Authority (RSA) is urging motorists to "slow down and allow extra distance" while driving.
According to Met Eireann, it will be "very windy on Friday tonight and for a time on Saturday morning".
Rain is expected to spread over Leinster and Ulster today, with more spreading from the west with "strengthening southerly winds" in the afternoon.
"In the evening it will become very windy or stormy in west and south Munster, with very strong, gusty west to northwest winds," Met Eireann said.
Tonight will be very windy and stormy in Munster and Connacht, especially in coastal areas, with strong northwest winds extending to all areas later in the night.
Some sunny spells are expected tomorrow, however, with some scattered showers, making it a "cool bright day" with temperatures between 9C and 12C.
Sunday will be mild and mostly cloudy with some small amounts of patchy rain or drizzle in many areas, with temperatures reaching 16C.
Current indications for Monday suggest that a band of rain will move eastwards across the country, clearing later with scattered showers following.
The UK Met Office has also issued a Status Yellow wind warning, with the remnants of the storm expected to cross parts of south Wales and south England overnight from this evening.