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