National Forecast
Issued at: 20 November 2025 04:30
TODAY - Thursday 20th November
A very cold but mostly dry start this morning apart from a few showers dying out over Connacht and Ulster. Crisp sunshine will break through this morning with plenty of clear and dry weather for this afternoon and evening. Rather chilly though with highs struggling at 3 to 7 degrees in a cold northerly breeze.
TONIGHT
A largely dry and clear night in store but turning very cold too with temperatures falling 0 to -3 degrees leading to some frost and icy stretches. Cloudy will build from the west later in the night with the coldest temperatures in the east with generally light winds.
TOMORROW - Friday 21st November
A mostly dry start but becoming quite cloudy later in the morning with outbreaks of rain developing along Atlantic coastal counties in a freshening southwesterly breeze. Highest temperatures of 5 to 9 degrees.
National Outlook
Overview: Cold at first with widespread frost and ice on Thursday night. Becoming less cold later on Friday and over the weekend with spells of rain forecast.
Thursday night: Dry and clear to start and turning very cold after dark. Cloud will gradually build in from the west overnight with very light outbreaks of rain and drizzle possibly developing overnight, mainly on Atlantic coasts. Mostly light to moderate northerly or variable breezes with lowest temperatures of -3 to +2 degrees with frost and icy patches likely.
Friday: Cloudy conditions will continue to spread eastwards into Friday morning with rain and drizzle becoming more persistent towards the afternoon as a band of rain moves in from the west. Highest temperatures of 4 to 9 degrees in light to moderate southerly winds, strong at times on Atlantic coasts.
Friday night: Rain and drizzle will clear eastwards overnight with isolated showers following in behind. Lowest temperatures of 2 to 7 degrees in moderate to fresh south to southwest winds, strong at times on south and east coasts.
Saturday: A brighter start on Saturday for the parts of Ulster and Connacht, while remaining cloudier elsewhere. Cloudy conditions will become more widespread though by midday with rain spreading from the southwest. This rain will persist for the remainder of the day and into Saturday night, with showery outbreaks moving in towards the morning. Light to moderate south to southeast winds, strengthening on west and southwest coasts by the afternoon. Highest temperatures of 7 to 12 degrees.
Sunday: Sunday is looking to remain generally unsettled with widespread cloudy conditions and showery outbreaks of rain. There will be opportunities for brighter breaks throughout the day in the southwest. Clearer spells will develop throughout the afternoon with showers becoming more scattered too. Highest temperatures of 6 to 10 degrees in moderate to fresh north to northwest winds, reaching strong to near gale force strength and gusty along Atlantic coasts.
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.