If you are planning to go for a swim on Christmas Day, beware the full moon, as tidal streams may occur and rip currents will be stronger and faster.
A large number of people are expected to take part in swimming events across the country tomorrow, and Irish Water Safety has issued warnings for event organizers to be aware of the potentially hazardous conditions.
A full moon event on Christmas Day happens around every 40 years. The last time it happened was on 1977.