Met Éireann has issued both a status orange and status yellow warning before the extreme weather hits.
The weather warnings were given on Wednesday morning for certain counties.
The status orange warning, issued at 8am, was a wind warning for counties Donegal, Galway, Mayo and Sligo.
The wind is to hit between June 13 at 9pm until June 14 at 10am.
The south to southwest winds veering westerly as part of Storm Hector will reach mean speeds of 65 to 80 km/hr with gusts of 110 to 125 km/hr.
Storm Hector is coming tonight. It has been named by @MetEireann. Wind gusts of 125km/h (75mph) expected along the west coast. Gusts up to 95km/h (60mph) possible in exposed areas inland. #StormHector pic.twitter.com/xTLaRmlSqm
— Barra Best (@barrabest) June 13, 2018
The status yellow weather warning was issued for counties Cavan, Monaghan, Leitrim, Roscommon, Clare and Kerry.
On Wednesday night and for a time on Thursday morning, the winds brought from Storm Hector will reach mean speeds of 55 to 65 km/hr with gusts of 90 to 110 km/hr.
The warning, issued at 8:17am is valid from June 13 at 9pm to June 14 at 10am.