A status yellow wind warning is in place for Donegal, Galway, Mayo and Sligo.
Met Éireann is warning of very strong and gusty south to southwest winds until 2 o’clock this afternoon.
People are being warned of difficult travelling conditions.
Separately, a status yellow wind and rain warning for Cork and Kerry is due to come into effect at midday, expiring at 8 o’clock this evening.
Spot flooding, along with fallen trees and branches, is possible.