Ulster
Issued at: 21 December 2025 05:30
TODAY - Sunday 21st December
Mist and fog patches along with lingering rain will clear this morning leaving a mix of cloud and sunny spells with just well scattered showers. Turning cloudier from the east from late afternoon with patchy light rain and drizzle following later in the evening. Highest temperatures of 6 to 10 degrees in light, occasionally moderate easterly or variable breezes.
TONIGHT
Mostly cloudy tonight with patchy rain and drizzle, becoming more widespread later. Lowest temperatures of 4 to 9 degrees. North or northeast winds will be mostly light allowing mist and fog patches to develop but will be more moderate near northern and eastern coasts.
Solar UV Index
Low.
TOMORROW - Monday 22nd December
Mostly cloudy tomorrow with just occasional sunny spells. Further outbreaks of rain and drizzle will occur though there will be dry intervals. Mist and fog patches may also linger in places through the day. Highest temperatures of 7 to 10 degrees in light easterly or variable breezes, more moderate near exposed coasts.
National Outlook
Overview: Turning drier and more settled with high pressure building.
Monday night: Cloud with outbreaks of rain and drizzle will gradually clear northeastwards overnight with clear spells and some showers following from the southeast. Lowest temperatures of 1 to 6 degrees generally but falling colder in some midland areas. Fog will form in mostly light easterly breezes.
Tuesday: Foggy for many in the morning, persisting in some places through the day. Limited sunny spells will occur but it will be largely dry with just some light rain or drizzle at times, mainly near coasts. Highest temperatures of 6 to 10 degrees in light northeasterly breezes.
Tuesday night: Some clear spells but overall mostly cloudy. Dry apart from possible spots of light rain or drizzle near eastern coasts. Lowest temperatures of 3 to 7 degrees in light, occasionally moderate northeasterly breezes.
Christmas Eve (Wednesday): Largely dry with just a few light showers or spots of drizzle. The best of any sunny spells will be in the afternoon. Highest temperatures of 6 to 9 degrees generally with light to moderate easterly winds, fresh at times near exposed coasts.
Christmas Day (Thursday): Largely dry with a mix of cloud and sunny spells and just a few light showers. Highest temperatures of 4 to 8 degrees in mostly light to moderate easterly winds, fresher near eastern and along southern coasts.
Further Outlook: High pressure continuing to dominate through the rest of the week with predominately dry conditions and highest temperatures generally ranging between 4 and 8 degrees.
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.