Met Eireann has issued a weather advisory for wet conditions along western coasts until Saturday morning.
The alert is in place for Clare, Cork, Kerry, Limerick, Donegal and Connacht.
The forecaster is predicting a band of rain to come in from the Atlantic, and is expected to stall over western counties on Thursday and Friday.
Forecaster with Met Eireann Elizabeth Coleman says there will be very wet conditions over the western half of the country:
"We're going to see a transition later on today into a milder air mass coming up from the south
"Through the day tomorrow its going to feel much milder and humid we'll have some patchy rain and drizzle
"But for Thursday and for Friday we're going to see a front trailing along the western side of the country and that's going to be quite persistent in some areas on the Atlantic coast."
The advisory will be updated tomorrow, with warnings possible.