Sea Area Forecast
Forecast valid from: 05:30, Monday 18 May 2026 until 06:00, Tuesday 19 May 2026
Small Craft Warning
South or southeast winds will increase to force 6 or 7 on Irish coasts from Carnsore Point to Mizen Head to Erris Head through Monday afternoon, extending to all Irish coasts on Monday evening and
early Monday night, veering south to southwesterly in the south and west later Monday night.
Gale Warning
Nil
Meteorological Situation at 03:00 UTC
Ireland lies in a mainly light to fresh westerly or variable airflow with an area of low pressure of 982hpa in the mid-Atlantic. Associated frontal troughs approach from the southwest and will move northeastwards through Monday.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Carnsore Point to Roches Point to Valentia
Wind: Increasing southerly force 4 or 5 imminent. Soon increasing force 5 or 6. Later becoming southwesterly.
Weather: Cloudy with rain and drizzle, heavy at times. Occasional mist and fog soon. Later becoming cloudy to fair with showers or longer spells of rain, some of it heavy.
Visibility: Moderate or poor in precipitation, mist and fog.
Forecast for Valentia to Loop Head to Erris Head
Wind: Becoming southeasterly force 4 or 5 imminent. Soon increasing force 5 to 7. Veering southerly later and decreasing force 4 or 5, occasionally force 6.
Weather: Cloudy to fair with isolated showers. Becoming mostly cloudy imminent and soon with rain and drizzle, heavy at times. Occasional mist and fog later. Becoming cloudy to fair towards the end of the period, with occasional showers or longer spells of rain, some heavy, with the slight chance of thunder.
Visibility: Moderate or poor in precipitation, mist and fog.
Forecast for Erris Head to Belfast Lough to Carnsore Point and for the Irish Sea
Wind: Becoming southerly or variable imminent force 2 to 4. Soon increasing south or southeast force 4 or 5. Later increasing force 5 to 7.
Weather: Cloudy to fair with isolated showers. Later cloudy with rain and drizzle, heavy at times. Occasional showers or longer spells of rain towards the end of the period. Occasional mist and fog.
Visibility: Moderate or poor in precipitation, mist and fog.
Outlook for a further 24 hours until 06:00, Wednesday 20 May 2026
Wind: Moderate to strong south to southwest winds, occasionally reaching near gale force in the south, southwest and east. Becoming mostly fresh to strong southwesterly on Tuesday night, then mostly moderate westerly in the west towards the end of the period. Weather: Mostly cloudy with widespread showers or longer spells of rain. Occasional mist and fog for a time on Tuesday. Becoming cloudy to fair towards the end of the period with showers becoming isolated.
Forecast issued at: 05:30, Monday 18 May 2026
All times are local unless specified
