A full moon on Christmas Day, will bring high tides and swimmers planning to take the plunge have been urged to be aware of strong tidal streams and rip currents.
Irish Water Safety is advising swimmers to get in, get out and to warm up this Christmas.
Meanwhile, about 250 homes remain without electricity as a result of Storm Eva.
ESB Networks said it aims to have power restored to all those affected in the coming hours.
At the peak of the storm 6,000 properties were without power.
Motorists driving home for Christmas are being advised to take extra care on the roads.
Met Éireann has now lifted its weather warnings but some people have already seen their travel plans disrupted.
Irish Ferries cancelled its fast service today, while others were delayed.
