Ulster
Issued at: 12 January 2026 12:30
TODAY - Monday 12th January
Partly cloudy with scattered showers, some possibly heavy and prolonged. Highest temperatures of 7 to 10 degrees with moderate to fresh southwesterly winds, decreasing light to moderate this evening.
TONIGHT
Mostly cloudy with scattered showers, merging into longer spells of rain overnight, turning heavy at times. Lowest temperatures of 1 to 4 degrees with light and variable winds.
TOMORROW - Tuesday 13th January
Tomorrow morning will start cloudy and wet. The rain will gradually clear eastwards during the morning and will be followed by sunny spells and isolated showers. Highest temperatures of 5 to 7 degrees with light to moderate west to northwest or variable winds.
National Outlook
Overview: Generally unsettled with low pressure dominating.
Tuesday night: Clear spells and isolated showers, mainly in the north and west. Cloud will increase in the west towards morning. Lowest temperatures of -1 to +4 degrees, coldest in the east and southeast where frost and ice are possible. Light westerly winds will become southerly overnight.
Wednesday: Cloud and rain will spread eastwards across the country during Wednesday morning and it'll become breezy with moderate to fresh southerly winds developing. The rain will gradually clear eastwards through the afternoon and will be followed by clear spells and scattered showers, mainly affecting Atlantic coastal areas. Highest temperatures of 5 to 10 degrees, coldest in Ulster.
Wednesday night: Most areas will be dry on Wednesday night but some showers will affect Atlantic counties. There'll be clear spells at first but cloud will build from the south overnight. Lowest temperatures of 1 to 5 degrees with light to moderate south to southwest winds.
Thursday: There is uncertainty in the forecast for Thursday but it's possible that a low pressure system will track close to Ireland, bringing a spell of rain and some strong winds. Highest temperatures of 4 to 9 degrees. The rain is forecast to be followed by clear spells and scattered showers on Thursday night, with temperatures falling back to between 0 and 5 degrees and winds easing.
Friday: A mix of cloud, sunny spells and scattered showers on Friday. Highest temperatures of 5 to 9 degree with light and variable breezes.
Further outlook: Current indications are for mixed weather at the weekend, with Saturday looking like the more settled day.
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.