The gale warning was issued on Thursday morning at 6am.
The status orange warning forecasted gale force winds for the coasts of the Emerald Isle.
The gales are set to hit this morning on all Irish coastal waters and the Irish Sea, reaching even storm force status for a time from Slyne Head in County Galway to Rossan Point, County Donegal
The storm is set to carry across to Fair Head in County Antrim also.
On Wednesday, a status yellow weather warning was issued for counties Cavan, Monaghan, Leitrim, Roscommon, Clare and Kerry but the counties of Dublin, Kildare, Longford, Louth, Offaly, Westmeath, Meath to be affected by Storm Hector.
The winds, coming in from the south and southwest, will reach mean speeds of 55 to 65 km/hr with gusts of 90 to 110 km/hr.
The status yellow wind warning is valid until 10am on Thursday.