National Forecast
Issued at: 15 September 2025 21:53
TONIGHT
Frequent showers over Ulster tonight, beginning to ease by morning. Largely dry elsewhere with clear spells and just well scattered showers. Lowest temperatures of 8 to 12 degrees in moderate to fresh westerly winds, easing mostly light by morning.
TOMORROW - Tuesday 16th September
A dry and bright start for most tomorrow with just isolated showers. Cloud and outbreaks of rain and drizzle will develop in the southwest later in the morning, gradually extending northeastwards through the day, turning heavy in the west and southwest later. However, the rain will not reach Ulster until night-time. Highest temperatures of 14 to 17 degrees in light to moderate westerly winds, backing southerly winds later in the afternoon and strengthening in the evening.
National Outlook
Overview: Remaining unsettled with spells of rain and showers, becoming windy at times too.
Tuesday night: Widespread outbreaks of rain, turning heavy at times particularly in the south. The rain will gradually clear northeastwards with isolated showers following from the west. Lowest temperatures of 10 to 13 degrees, with moderate to fresh southeasterly winds veering southwesterly.
Wednesday: Dry and blustery for most, with isolated showers and sunny spells. Some more frequent showers may clip the south coast for a time in the morning. Highest temperatures of 16 to 19 degrees with fresh to strong southwest winds, reaching gale force along west and northwest coasts.
Wednesday night: Largely dry with clear spells. Cloud will build in the south overnight with outbreaks of rain moving in. Staying mostly dry with clear spells and isolated showers in the northern half of the country. Lowest temperatures of 9 to 12 degrees in light to moderate southerly winds.
Thursday: Outbreaks of rain in the south are likely to persist for much of the day with drier and brighter conditions in the north. Highest temperatures of 15 to 17 degrees with light southwesterly or variable winds.
Friday: Current indications show a bright day for most with spells of showery rain at times. Highest temperatures of 15 to 17 degrees with mostly light westerly winds.
Further outlook: Unsettled weather is likely to continue into next weekend with further showers and outbreaks of rain.
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.