The Met Office has issued a yellow weather warning ahead of Storm Gerrit which is expected to bring wet and windy weather, which is "likely to cause some disruption".
With the weather front moving in on Tuesday night into Wednesday morning, the warning is effective from 2:00am to 10:00am on Wednesday 27th December.
A Met Office spokesperson said:
"A band of heavy rain will move northeast across Northern Ireland on Tuesday night accompanied by strong southeasterly winds.
"Many places will see 15-25 mm of rain fall overnight, but parts of Antrim and Down are likely to see 30-40 mm with higher accumulations, perhaps around 60 mm, over the Mournes and Antrim Hills.
"Gusts of 40-45 mph are expected widely inland with 50-60 mph over hills and around coasts, and perhaps 65 to 70 mph along exposed parts of the Antrim coast."