Ulster
Issued at: 17 January 2026 17:00
TONIGHT
Scattered showers this evening and early tonight, becoming isolated as the night goes on. Light southeasterly or variable breezes will allow fog to develop, becoming dense in places away from eastern coasts. Lowest temperatures of 0 to 4 degrees.
Solar UV Index
Low.
TOMORROW - Sunday 18th January
Fog will clear gradually tomorrow with a few sunny spells developing. It will be dry apart from a few lingering showers in the east. Highest temperatures of 4 to 8 degrees with light southerly winds, increasing a little through the day.
National Outlook
Overview: Generally unsettled with rain and showers each day, breezy at times too.
Monday night: Any lingering outbreaks of rain and drizzle in the north will clear early on, leaving a clear, cold and dry night for many, with areas of fog developing in light southeasterly or variable breezes. Lowest temperatures of -2 to +2 degrees with patches of frost and ice forming. Towards morning, outbreaks of rain will develop in the southwest with freshening winds.
Tuesday: Areas of fog will clear through the morning as it becomes breezy with outbreaks of rain, heavy at times, gradually extending northeastwards through the day, alongside fresh and gusty southeasterly winds. Highest temperatures of 6 to 9 degrees.
Tuesday night: Cloudy and breezy for most with limited clear spells developing and scattered showers. Lowest temperatures of 3 to 6 degrees, with moderate to fresh and gusty southeasterly winds.
Wednesday: Breezy with outbreaks of rain, heavy at times. Highest temperatures of 6 to 9 degrees with moderate to fresh and gusty southeasterly winds.
Thursday: Current indications show dry and bright conditions initially before a further spell of wet and blustery weather moves in from the Atlantic. Highest temperatures of 6 to 9 degrees, with moderate southeasterly winds increasing fresh to strong.
Further outlook: Likely continuing unsettled with further spells of rain and showers on Friday and for the weekend.
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.