A wind warning has been issued for Donegal and Sligo.
The warning is also in operation for all of Munster, Carlow, Kilkenny, Wexford, Galway and Mayo.
A status orange rain warning has been issued for Cork, Kerry, Tipperary and Waterford.
Met Eireann is predicting up to 80 millimetres of rain to fall across the four counties from 7pm tonight until 9pm tomorrow.
The rest of the country will be under a 24 hour status yellow rain alert from 9pm.