Ulster
Issued at: 18 December 2025 17:00
TODAY - Thursday 18th December
Wet and breezy with persistent rain in the east, heavy at times, clearing to drier conditions from the west, with just some isolated showers, following this evening. Moderate to fresh southerly winds in the east, backing and easing southwest with the clearance of the rain.
TONIGHT
Starting off mostly dry with clear spells, before scattered showers feed in from the Atlantic and track eastwards. Some of the showers will be heavy with a chance of hail or thunder. Lowest temperatures of 3 to 7 degrees, with fresh and gusty southwesterly winds.
Solar UV Index
Low
TOMORROW - Friday 19th December
Starting off blustery with a mix of scattered showers and sunny spells. The showers will become lighter and more isolated through the morning. Highest temperatures of 7 to 11 degrees, with fresh and gusty southwesterly winds easing and backing southerly towards evening.
National Outlook
Overview: Unsettled over the coming days with rain or showers, as well as turning cooler if not colder from Saturday night. However, high pressure will bring mostly dry and fairly calm conditions from later Tuesday, lasting for much of the Christmas period.
Saturday night: A very cold and calm night with frost and ice developing under clear skies. Some possible wintry showers may move into southeast and east areas later too. Lowest temperatures of -2 to + 2 degrees.
Sunday: Cooler than recent days with some showery rain moving in across the country on an easterly breeze with the odd wintry shower possible. It is likely to stay driest across the western half of the country with sunny spells but coldest here too. Highest daytime temperatures of 4 to 8 degrees.
Monday: Some uncertainty but further showery rain is expected, mainly across Ulster and Leinster. Frost and ice in places to begin too. Highest temperatures of 4 to 8 degrees, in just a light easterly breeze.
Tuesday: Some further showers moving in across the country on a moderate east to northeast breeze, currently the focus of these will be for south and southwest counties. Highest temperature of 5 to 8 degrees.
Rather cold for Christmas Eve and Christmas Day - dry and quiet with crisp winter sunshine, but with frost and ice to begin and end each day. There will be the chance of a few coastal showers up along the East Coast, in a light to moderate north to northeast breeze.
Temperature circle (°C): maximum and minimum temperature forecast for each day. Wind symbol (km/h): arrow points in the direction the wind is blowing. The weather and wind icons: for the time of maximum temperature and minimum temperature.