National Forecast
Issued at: 18 January 2026 04:49
TODAY - Sunday 18th January
Areas of mist and fog to start, gradually clearing from most places through the morning. Dry for many for daylight hours with bright or sunny spells and just occasional showers, mainly in the east. Later this afternoon and evening, outbreaks of rain will develop in the west and southwest. Highest temperatures of 5 to 9 degrees with light to moderate southerly winds freshening in the west during the evening.
TONIGHT
Cloudy tonight with outbreaks of rain in the west gradually extending eastwards across the country. Lowest temperatures of 1 to 5 degrees, coldest in the east early on, with moderate, occasionally fresh, south to southeast or cyclonic variable winds.
TOMORROW - Monday 19th January
A cloudy and wet start for most tomorrow, with widespread outbreaks of rain and drizzle. The rain will start to clear northwards through the afternoon with drier and brighter conditions extending from the southwest. Highest temperatures of 5 to 9 degrees with moderate cyclonic variable winds, easing mostly light westerly breezes with the clearance of the rain.
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.